to come in when he can. no, he's not ready to come in. well we won't go to him yet. i'm wondering, is drew griffin there? is he in watertown, massachusetts right now? watert massachusetts, right now? >> reporter: yes, jake, i can hear you. i can hear you in watertown where the situation -- go ahead. >> please tell us, what are you seeing in watertown? >> reporter: jake, the situation is pretty much the same has it has been for the last hour or so. a significant presence down the street of police. we do have additional video of the suspect that was brought into custody here clothed, and we are hoping we can show that video. this is the suspect that was brought into custody here in watertown. we only know that it's related to whatever did happen here in watertown. we don't want to draw any conclusions to this man, but we do know the fbi was questioning

this man. they took him out of the car twice and put him up against a wall, appeared to photograph him, and then placed him back into a car. as far as we know, that suspect is still being held in a police car not far from where i am standing. we understand that one other suspect is still on the loose apparently in watertown and that police here have warned all residents, not only to come outside, but not to open their doors to anyone except for a police officer who may be checking on their welfare. it seems to be a very dangerous situation taking place here in watertown. at the same time, the fbi is actively trying to draw some conclusion to whether or not this activity here in watertown is related to what happened at the boston marathon on monday. it was just 5:00 today when the fbi released two photographs of

the suspects they believe were involved in the boston marathon bombing. two young men, both of them carrying backpacks. both of them having ball caps on. and the fbi had the admonition to bring these people into custody. if you know them, give them a call. earlier there was a police officer shot and wounded at m.i.t. where he was shot and wounded and later died. shortly after that a carjacking happened in the cambridge area. then a massive shoot-out took place here in watertown. all of these somewhat connected on the same string of roads, but we don't know if all this activity is all connected to each individual event i just named or if any of it is connected to the boston marathon

itself. we know the fbi joined into this investigation here in watertown to determine if there's a link between the two, and it certainly looks like by the increased activity we are seeing that there is more activity. jake? apparently we are going to be reporting on the activity. and from what i understand, we may be getting more information from the massachusetts state police spokesperson, although he has left this scene and gone back to his headquarters. perhaps just to assemble the information from all the agencies involved. there are as many as a dozen police agencies, maybe more involved in this activity. there's a lot of activity going on. there was, according to our witnesses, police actively going between houses trying to find

somebody. and also from the massachusetts state police spokesperson, a quote that he believes that explosive devices may have been used, multiple possible explosive devices were used against police at the incident that took place here in watertown. it is very coincidental at this point. we are trying not to draw conclusions, but at the same time this is coincidental to what's been happening there. we continue our coverage of this crazy night and crazy week here in boston with jay tapper and john berman. gentlemen? good morning. our breaking news continues here in watertown. i'm jay tapper.

>> i'm john berman. it has been a night of murder and gunfire. reports of explosions rocking the area. this all happened while you were sleeping all night long. people in or near watertown, a town just outside of boston about it a miles from here, being told to stay indoors. do not answer the door unless the people can identify themselves as really police officers right now. as we have been saying, it was a night of sheer mayhem starting with shootings on the campus of m.i.t. in cambridge. that's a shooting, about a mile from where we are standing, which is the site of the boston marathon bombing. police say there was a shooting and then a short time later a carjacking there. then a police chase with reports of explosives involved. >> it was a heroing night in nearby watertown. there a male suspect has been apprehended. take a look at this exclusive

cnn video. the suspect ordered to strip naked before being taken into custody. now we are waiting to hear from investigators whether there's a connection to monday's terrorist attack to the boston marathon and the two bombings that killed three individuals and maimed so many others. >> we are standing by at this hour for a news conference from watertown, from law enforcement official there is. we will bring that to you the very second it starts. in the meantime, let's go to drew griffin on the streets of watertown all night tracking this story. let's get the very latest. drew? >> reporter: i can tell you that the suspect we saw getting into the car, the one that was ordered naked, has been questioned now three different times by the different various agencies we have here. and my producer, david fitzpatrick, just observed the man. he is still being held here on the scene, which to me is somewhat peculiar.

he was, as you say, ordered to strip naked completely. obviously, the police were very concerned because earlier in the evening during this chase we were told by the massachusetts state police spokesperson that multiple possible explosive devices were used against police here at the incident in watertown, from witnesses who saw and heard what happened, we believe that some of those possible explosive devices were actually thrown from a fleeing car at the police. so it was a very chaotic scene. it remains confusing with the caveat that the people of watertown are being advised with a dangerous person on the loose and to not even open their doors unless it is a policeman knocking on the other side of their doors. so a chaotic scene, we hope to get more information, but right

now this is an active crime scene investigation with one suspect apparently being held in some sort of custody as police look for a second suspect. >> all right. drew, thank you so much. the one suspect that we know of being held on the scene, that is very interesting. we also know from the massachusetts state police they intend to go door-to-door in watertown. they have put out a notice saying they are going door-to-door knocking on doors, finding out what is in each house. they do tell the people of watertown that the police officers will be clearly identified. so if someone knocks at your door, make sure they are a cop before you let them in. otherwise people in watertown, please stay inside. law enforcement officers are stressing that right now. one other update, we do know a transportation officer was also wounded in the activities going on for the last several hours. he's being treated right now at a local area hospital. again, as we have been saying the last several hours, it is a chaotic evening in the boston

area. it was monday when there were the bombings just behind the finish line of the boston marathon. then last night at 5:00 law enforcement officials and the fbi released photos of people they call possible suspects, two young men, one in the white hat, one in the black hat at the end of the boston marathon. then last night the chaos, a shooting at m.i.t., a prestigious university across the street, across the river in cambridge, massachusetts. a policeman was killed there. then there was a car chase that ultimately ended up in watertown eight miles from here. now there's someone, we believe, a suspect in custody. however, people are telling them in the town of watertown to stay inside because someone else may be on the loose. tom fuentes is a former assistant director with the fbi who knows a lot about situations like this, he is joining us on the phone now from washington. tom, you have been watching all night, what are your observations? >> i think right now we have a lot of confusion going on trying

to figure out whether it's connected to the boston marathon bombing and what occurred last night. several pockets, could be the individual, they could have received notification from somebody recognizing one or both of the subjects in the video and reporting that and the police possibly approached the location. they ended up in a shoot-out and explosives being used. the second possibility is you could have a copy cat. you could have somebody else drawing on what they have seen this week from the marathon bombing and they may have planted explosives. police may have responded to that with one or two suspects, so that's still a possibility. and then the person in custody now, trying to verify whether that person is related to the explosives at m.i.t., the killing of a police officer at

m.i.t., and, of course, the boston marathon bombings. as far as the person being held at the scene, law enforcement, in this case, the fbi would have to get that subject before the u.s. magistrate in a reasonable time, but in this situation it would be reasonable to keep the person nearby because they want to find out if there's an apartment that they used or they lived in nearby, are there explosives in it? they need to try to determine that. if you have residents in a building that could be unsafe with hazardous material in it, m.i.t. or even for keeping that subject nearby to get additional information and give something to the police. >> tom, hang on for a second here. i have a press release from the middlesex county attorney. that's lengthy report that i

want to release. this is from the district attorney in the county where a lot of this is happening in massachusetts. police are investigating a fatal shooting at m.i.t. campus police officers by two men who committed an armed carjacking in cambridge. michael pellgrove, robert haas announced that this evening. at approximately 10:20 p.m., april 18th, police received reports of shots fired on the m.i.t. campus. at 10:30 p.m. an m.i.t. campus police officer was found shot in his vehicle in the area of basser and main streets. according to authorities, the officer was found evidencing multiple gunshot wounds. he was transported to massachusetts general hospital and was pronounced deceased. authorities launched an immediate investigation into the circumstances of the shooting. the investigation determined two males were involved this the shooting. a short time later police received reports of an armed carjacking by two males in the area of third street in

cambridge. the victim was carjacked at gunpoint by two males and kept in the car with the suspects for approximately half an hour. the victim was released at a gas station on memorial drive in cambridge. he was not injured. police immediately began to search for the vehicle and were in pursuit of the vehicle into watertown at that time exclosive devices were reportedly thrown from the car by the suspects. the suspects and the police also exchanged gunfire near dexter and laurel streets. during the pursuit the officer was injured and taken to the hospital. during the pursuit, one suspect was critically wounded and taken to the hospital where he was pronounced deceased. an extensive manhunt is going on in the watertown area for the second suspect who was believed to be armed and dangerous. the case is being investigated by local, state and federal authorities working in cooperation. the massachusetts state police bomb squad is assessing and removing any potentially explosive devices that may have

been thrown onto the street by the watertown suspects. the investigation remains active ongoing. no further information is available at this time. wow, that is a whole lot of information. and that describes a scene as we have been saying, it is no exaggeration, no hyperbole to say, just complete chaos beginning with a shooting, the campus of m.i.t. in cambridge. then we have a carjacking with the two suspects keeping the man who ups the car with them for a half hour. a police chase into watertown, an explosive possibly thrown out of the window during the police chase. one suspect being injured during the police chase, being taken to the hospital and since deceased. and then one suspect currently on the loose. jul julia, this is extraordinary.

>> it is. it is important that any such connection be made in the it moist care. we don't want people to have the false impression this is over, this is still ongoing. the silence on that issue means they are not prepared to say there's a match. and when they determine that there's not a match, that's what i'm looking for, is they are not a match, in other words, can they say these are not the same two guys, then we know it is a bad koups dencoincidence. the other thing is we tend to think of national security as sort of a federal effort. and what's remarkable in all of this, while the fbi is taking the lead on the investigation, of course, all this is being done by local and state law enforcement. that's the way it works. >> campus police. >> campus police. but what we don't know still, it is interesting to see what

triggered it, and it may have been the m.i.t. police officer recognized the gentlemen after the pictures, is what started this evening beginning with a police officer being killed, which is -- it doesn't happen very often. these m.i.t. campuses are very open and safe. and what started this long line of events, is it related to the 5:00 p.m. release of the pictures? >> this release shows there's still a suspect on the loose and one suspect was taken to the hospital deceased. what's interesting to this to me is this does not take into account that the man we saw strip naked and put into a police vehicle unless that man subsequently died, but we don't believe that to be the case. the video that we have of a man being stripped naked and put into a police vehicle is unclear whether he's one of these two men. >> this has taken place literally over the course of boston and cambridge and watertown. it's a lot of space. it's very possible there are some false hits. look, the police officers here

don't know what they are working with, so there's the utmost of caution. you heard seth earlier being told he was moved away from his car, can't get access to his car. and what people should know watching this is they want to get the match right if there is a match. because that will mean a lot to the city. and it will mean a lot to this nation. it will mean a lot to the city. >> let me bring in the former assistant from the fbi, tom, as juliette pointed out, it doesn't say this is connected to the boston bombings here, but i will say one thing is clear. it's happening in the atmosphere of the post-bombings, which is why there's an enormous heightened state of security around this entire area. we'll get to tom in a minute. >> an officer was shot on campus and has expired as a result of his wounds. there was a carjacking that took

place as well in cambridge involving a mercedes suv. that car was ultimately discovered here in watertown and pursued by the watertown police department. the pursuit went into a residential neighborhood not far from here where there was an exchange of gunfire between watertown police and the m.i.t. police officer and the two suspects in this suv. during the course of this pursuit, several explosive devices were discharged from the car at the police officers. in the exchange of the gunfire, we believe that one of the suspects was struck and ultimately taken into custody. a second suspect was able to flee from that car and there is an active search going on at this point in time. an mi.t. police officer was struck during that exchange of gun fire and is currently at the

auburn hospital in critical condition. there's an active search of teams from the state splis and the boston police department. the watertown police department are involved in this search as well as traffic diversion throughout the area. the most important message that we are doing right now is for public safety and the safety of those people in that neighborhood. we are asking everyone to shelter a place for a time being, not to leave their homes. if they see something suspicious other than a police officer coming to their door, they should call 911 immediately. we also want to forewarn motorists traveling through this particular area, even though we are locked down in this neighborhood, that they should not stop for anyone or pick up anyone along the side of the roadway. what we are looking for right now is a suspect considered and consistent with the description of suspect number two, the white capped individual who was

involved in monday's bombing of the boston marathon. he was -- we have a picture, a video from the 7/11 in cambridge last night that he is dressed in a gray hoodie-type sweatshirt. he's a light skinned or caucasian male with longer brown, curly hair. you have seen a picture, you all have it. that's the individual that we are looking for at this moment. >> reporter: that's suspect number two? >> that's suspect number two. the white-capped individual. >> reporter: suspect number one was shot then? >> that's correct. i just want to be clear, we will do regular updates to this, but right now we are in a public safety mode here. our immediate concern is for those people in the neighborhood up there. we have an active search going on by tactical teams to locate and apprehend this particular individual. he should be considered armed and dangerous and is a threat to anybody that might approach him.

so please use extreme caution and stay in your homes. if you hear something, if you see something unusual, we would like you to call 911. i'm going to ask chief devoix to briefly describe the neighborhoods and streets involved up there so everyone is clear on that. >> reporter: what's your name? >> i'm calling on the watertown community to be calm at this time. we are talking about east watertown, dexter, laurel street, school street area, to remain in your homes. as the colonel said, please stay in your homes, do not come out. if you get a knock on your door, make sure we'll have uniformed officers there to assist with the screening and the safety of these neighborhoods. again, the watertown community has been very good. we are asking for your cooperation again to assist us during this difficult time. >> reporter: is there a controlled blast of some sort over in east watertown?

>> there's no planned controlled blast at this time. there are eod explosive ordinance teams that have been up there in the process of recovering anything discharged from the vehicles. so we are making those safe at this point. >> reporter: do you know how many? >> we are not prepared to talk about identifications. that was one of reasons that those videos were released earlier yesterday. >> reporter: where was he shot? >> i'm not getting into the specifics of that. we don't have the names at this point. >> reporter: so this is an ongoing investigation. >> we can't get into the details on the descriptions of the suspects or the names. we are trying to get information out to the people who live here to stay in hair homes and not open their doors unless police officers are there. there's a 20-block perimeter around the location that the chief just talked about. we are concerned about securing that area and making sure that this individual is taken into

custody. we believe this to be a terrorist. we believe this to be a man who has come here to kill people. we need to get him in custody. one thing that i just want to say is there have been two police officers, one killed and one badly injured tonight. our sympathies go out to chief mcmillan who has a severely injured officer in the hospital and to the chief of the m.i.t. police and to the family of the officers. this is a terrible tragedy. we don't want to increase it. we want to be very careful what we do here. >> folks, we have to get back to campus. we'll be back in about an hour to brief you again. thank you. >> well, you have been listening to an impromptu police conference. a familiar voice there at the end. >> you have been listening to the extraordinary press conference bringing us the events of this night going on since 10:20 p.m.

i'll give you the headline. that man in that picture is believed to be the man we have been talking about since 5:00 last night as suspect number two in the boston marathon bombings. he was the man that police say was in the white hat. he is on the loose right now. and there is a manhunt underway right now to find that man. you're looking at a picture of him right now near the finish line of the boston marathon. he's on the loose believed to be in the watertown area, a town eight miles outside of boston right now. the police are going door-to-door searching for him. he's on the loose, believed to be dangerous. >> if i can interject one thing, john, if you are in the watertown area, what the massachusetts state police and local law enforcement authorities are saying, do not leave your home and do not answer the door unless it is a clearly identified police officer. if you are in or around watertown, do not leave your home, do not answer your home unless it is a clearly identified police officer.

>> this is a crucial piece of information if you live in watertown near the surrounding towns. this other bit of news, the suspect number one from the boston marathon bombings, people, police now believe he has been killed. this was in the court of the events of last night. this chaotic scene that began in massachusetts across the charles river from here, a police shoot-out there. then a car chase, a carjacking, a car chase and police say that two men in this car were throwing explosives out of the car as this chase was going on. one suspect was shot, taken to a hospital, he is now dead. they believe that man to be black hat suspect number one in the boston marathon bombings. >> as this unfolds over the last three days since the boston marathon attack, we have been wondering, we sort of knew they were here, that they had probably planned it here beforehand, but whether they had an escape route to get out of

town was also a question mark. they stuck around. these areas are literally half a mile away from the finish line. and we will find out sort of what triggered all the activities tonight over time. it is 5:00 the fbi released their pictures and five hours later you have a shoot-out with the police officer and then one of the suspects is now dead. so everything is happening very, very fast over the course of the last 12 hours, but it appears they never left town, which is surprising, even to me. >> i would like to go now to the other gentlemen that has been staying up all night covering this story. one of the many, actually, but one of the two in front of the camera. drew griffin on the scene in watertown, what are you seeing? what's the latest from watertown? >> the latest here as we have been watching throughout the night, that one person was taken into custody, he was not taken anywhere, stripped naked, then

he was dressed and pulled out and questioned again put up against the wall, taken photos of, questioned again but not taken away from the scene. now according to one of our photo journalists who has that angle, that person has been allowed to leave and go home, i assume. we don't see any of that emergency door-to-door search that is going on from our vantage point, although we are a very tight cordened off area here in watertown just down the street from where we believe the shoot-out took place between the suspects and many different police officers that were responding to this scene. but, boy, oh, boy, what a night and what a lot of questions we have. you just have to wonder if that first initial police officer down at m.i.t. was the one who actually identified these possible suspects and basically

has now given his life in pursuit of these two. gentlemen? >> it's been a crazy night, indeed. we know one police officer has been killed, an m.i.t. massachusetts transit, i'm sure i'm botching what the initials are. an mbta officer has been wounded. and one of the suspects in the boston marathon terror attacks, suspect number one with the black hat, has been killed in the shoot-out with police. the second suspect, suspect number two with the white hat, he is still on the loose and he is in watertown. he's thought to be in watertown, massachusetts. >> let me read to you what the police commissioner of boston says about this man. we believe this to be a terrorist. this is a man who has come here to kill people, which is why the people of watertown need to be so careful. stay in your homes. >> there's probably about 9,000

from what i'm hearing, police officers on this now, that is everyone and everyone they know right now. this is a massive manhunt related to the terrorist attack. so i worked in massachusetts, i know all the individuals that we just saw in that press conference, davis, devoix from watertown, they are all well trained in these efforts and work well together. no one seems to be trying to step on each other's toes. this is a local and state law enforcement effort. the investigation will go to the fbi and it will go to a criminal court if the second suspect is captured alive and there's a criminal trial, but this is what local law enforcement looks like, even though it is a terrorist incident. >> i want to just repeat this. we'll be repeating this throughout the morning until this individual suspect number two with the white hat is

apprehended and hopefully brought to justice. and that is if you live in or around the watertown, massachusetts, area, police are advising you to stay in your homes and not to answer the door or let anyone into your house unless they are a clearly identified officer of the law. there is a terrorist according to the police, terrorist on the loose who wants to kill people. i'm sorry if that sounds alarming and frightening, but this is just the fact of what's going on in watertown right now. there's a terrorist on the loose according to law enforcement. stay in your homes, do not let anyone in your house unless it is an identified police officer. >> and this is the culmination right now of what has been a six-hour crime odyssey, really, that began on the campus of the massachusetts institute of technology in cambridge, massachusetts. it began with a shoot-out of a campus police officer being killed and followed by a

carjacking. there was actually a hostage taken along with them. >> it's horrible because he is an eyewitness now. >> he was released. that man was -- there was a police chase and the two men threw explosives out of the car during that chase. one suspect during this chase was shot and wounded and taken to a hospital. he is now dead. that man is believed to be suspect number one. one of the suspects in the boston marathon bombing. the man wearing the black hat, if you have seen the pictures, the chase continued after that. and now there's a man on the loose and authorities have released a picture of this man, what he was believed to be wearing tonight. if we can see a picture of that once again, the man is in a gray hoodie. hopefully we can take a look. we'll get to it eventually. >> one of the things interesting as this case has unfolded overnight is that law enforcement, the fbi has released photographs all night. they have been releasing photographs all night as they positively identify the individuals in the photographs

as being suspect number one and suspect number two. probably before you went to bed you knew about the press conference the fbi had shortly after 5:00 p.m. yesterday, thursday, in which they released some images. you see the images right now on the tv, but all night the fbi has been releasing new images. it started with one that had been essentially crowned sourced. individuals, millions of americans and people around the world looking at pictures and images, finding this one picture on one guy's facebook page. in which the corner, suspect number two, suspect number with was in the corner of "the new york times," they verified it was legitimate. the fbi verified it was legitimate and other photographs since then have been coming forward and the fbi has been releasing them. >> it will be daylight relatively soon and that will change everyone's behavior. people will start to go to work and be outside, but i don't want to say i'm terribly confident, but that's going to make the

search much easier for the police officers. that's why they want to keep people in watertown inside so we don't have more people walking around and daylight will expose places someone may be hiding. he's also alone and being alone he used to have a partner, and that means he's probably not as confident as he once was and maybe more desperate. >> we'll reset for individuals just tuning in here domestically and around the world. just before 2:00 a.m. eastern time a cameraman from affiliate whdh shot dramatic video of a suspect on the ground surrounded by police. take a look. >> in the video we are watching here, at some point we may see the suspected gunman. we are not sure where. and this is -- that's the map right there on the ground. wow. they did a great job. this is where they are backing up, i guess. >> his eyes seem to be closed, his arms are spread out, he's on

his stomach. >> he's on his stomach on the ground, but that's the point where they are backing up. they are backing up and perhaps he was threatening he had some sort of a weapon on him. his hand, he doesn't appear to have anything in his hands. >> this is unbelievable. >> and this is happening just moments ago. adam, you still with us? >> i'm still with you. and again, this is just what i heard from police. i can't go on -- >> no, no. we are watching the guy here in jogging pants and the stripe up along the side, brown hair, white male, jacket, arms spread. and so, you know, it's like, if they are not going after him right now in this video, then you think he's talking about that he has a device strapped to his body or something. >> it is very possible. >> that is footage from hours ago, but more to the point, the police pursuit into watertown, massachusetts, which has been going on all night, it was witnessed by an employee of cnn

and the situation unfolded right in his neighborhood. here's what he had to tell the stations anchors on the air. >> we want to get back to shane who works in our graphics department. shane, i know you only have a moment to us because they want to take the cell phones off, so talk to us quickly. >> um, yeah, i just witnessed -- there was a group of officers at the corner of laurel and dexter that started heading down towards my house. they started taking their firearms out and pointing them down towards school street looking, they were looking at the houses on my side, i'm number 23, so they were pointing them in the direction of my house and the house next to mine. and that's when i decided to hit the floor and i don't think it's worthwhile sticking my head out at this point. >> no, i think we should let you go and please take care of your family and be safe. >> i want to review a dramatic press release from the middlesex

district attorney that sums up what's been happening here since 10:00 last night. it's a vivid description saying police are investigating a fatal shooting of an m.i.t. police officer by two men who committed an armed carjacking in cambridge. middlesex acting attorney robert haas and m.i.t. police chief announced this evening. police received reports of shots fired on the m.i.t. campus. at 10:30 an m.i.t. police officer was found shot in his area near vasser and main streets. the officer was found evidencing multiple gunshot wounds and transported to massachusetts general hospital and pronounced deceased. authorities launched an immediate investigation into the circumstances of the shooting. the investigation determined two males were involved in the shooting. >> this was a short time after that. police received reports of an armed carjacking by two males in the area of third street in

cambridge, that's right near boston. the victim was carjacked at gunpoint by two males and kept in the car with the suspects for approximately a half hour. the victim was released at a gas station on memorial drive in cambridge. he was not injured. and if i can add an editorial point, he is incredibly lucky. police immediately began a search for the vehicle and went into pursuit of the vehicle in watertown, that community is eight miles outside of boston. at that time, explosive devices were thrown by police and they also exchanged gunfire in the area of dexter and laurel streets during this pursuit. an mbta, transit authority officer, was hurt and sent to the hospital. >> one officer was critically injured and sent to the hospital where he was pronounced deceased. one of the suspects deceased. >> that's suspect number one with the black hat. >> we'll get to that in a second. the extensive manhunt is underway for the second suspect

believed to be armed and dangerous. the case is being investigated by local and state authorities by the massachusetts state police. this press release is from the middlesex county district attorney. shortly after this release came out, there was a press conference from police in the watertown and boston area who told us that the suspect who was shot and killed during this chase, they have identified him. they believe him to be suspect number one in the boston marathon bombings. he is dead. they believe that suspect number two, the man in the white hat that you have seen in all the pictures overnight in the boston marathon bombings, that man they believe to be currently on the loose. the man on the left right there they believe to be on the loose in the watertown area. they call him a terrorist. they say it is his goal to kill people. so be very, very careful in watertown. >> so two points of warning that we want to offer to people in the boston area this evening. one, if you're in watertown as john just said, stay in your house. do not answer the door unless it is a clearly identified police

officer. do not answer your door and do not leave your home unless it is a clearly identified police officer. the second point we are just getting from m.i.t., that is the college campus where the police officer was shot earlier today, last night around 10:20, setting off this entire manhunt, according to m.i.t., a suspicious package has been reported in the area of 50 to memorial drive. stay away from the area of 500 memorial drive until further notice. >> jake, that is going to happen for the next 24 hours. no one knows why these two suspects stuck around. there is an important level of caution. you saw our boston police commissioner, a very authoritative figure come out, and he was not messing around. there's a terrorist on the loose. we don't know what they have

done in the last couple hours and they want to protect the citizens of the city. so that is -- there's going to be a lot of false alarms tomorrow. there's going to be a lot of false alarms, we have to be sure of them, but they will be false. >> it is already tomorrow. >> yes, it is, sorry. >> we are within 12 hours of when law enforcement officials first released those photos of the two suspects from the boston marathon bombings. less than 12 hours ago they released those photos. it is 4:40 a.m. in the east. one of the suspects is dead and the other is involved in a manhunt with police trying to track him down. we are joined by tom fuentes, a former assistant director with the fbi who knows a lot about these situations. tom, you hear manhunt and hear terrorist on the loose in watertown, massachusetts, what's the m.o. for law enforcement officials there right now? >> right now what they are trying to determine is if he's

gone into somebody's house. he could be going into someone's home, seeing if they have weapons, hold them hostage, steal their car, so i think that's the concern right now that that's an additional factor of safety in the area. secondly, we don't know if at this point if maybe he was running to his own residence and in that red dense have more explosive devices or hazardous materials. that's the concern right now. we don't want anybody else out on the street possibly being misidentified as this guy that could have a bad result. the main concern is to keep the public safe. the best way to keep them safe would be in their own home, but check every home and make sure he has not gone into them. >> tom, one thing that's very interesting that happened earlier this evening is police found an individual, it turns out to be an individual who has been since set free, so apparently a completely innocent

individual, but this individual was detained. he was made to strip naked and detained by police. juliette kayyyem, former homeland security official, and i were talking about this. we concluded that the presumption is that the person may have explosives on him and that's why he was made to take off his clothes. one would assume that the police are presuming that this individual who is wanted, suspect number two, may, in fact, also be armed with explosives. is that -- would that be your assumption as well? >> right, absolutely. if the two suspects were in that vehicle and throwing out of the vehicle explosive material, then that means that he may still have something with him, either a firearm, an explosive device or both. and if he lives in the area, he may have gotten to that red dense and obtained more. so that's a complete concern at

this point. >> can i just say it's sort of hard to put this in perspective right now just sort of how people who are watching can think about this in the context of counter terrorism and homeland security. the activity over the last 12 hours are unique in terms of crowd sourcing. it's the nature of the technology now with pictures everywhere. it's like fingerprints and now everyone can take a finger print. that's sort of remarkable seashift. and i'm trying to go through it in my head, being someone that knows this world, normally terrorists commit suicide or they flee. and so people will probably e-mail me that there are hundreds of examples otherwise, but the big cases, it's either they are willing to die for a cause or they are getting the heck out of dodge. it's one or the other. those who stick around don't stick around this long. this has been four days. so it will be interesting why

they stuck around. this is probably animating some of the activity here, what were they doing here, why were they still here? and it's going to be like this for a couple days. a lot of boxes and suspicious packages. i'm hopeful that when the sun comes out it will be harder for the second suspect to hide. >> let me put that question to tom fen test, the shooting happened a mile and a half away from the boston marathon where the bombings took place. the suspects seemed to stay very, very close to where this all happened. how unusual is that? >> i think it is very unusual. and it does tell you that they are terrorists but they are not well trained terrorists. they didn't -- even from the videos at the scene, they stayed to observe their handiwork, which kind of reminds you to the psychology of the arsonist. a person sets a building on fire, the building is engulfed and stands on the street corner and watches the fire department work and watches the flames happen. and that seems to be what they

did immediately after the explosions after the marathon. that's the different mindset. they are not the same as trained terrorists who are going to martyr themselves in the act or run off and go somewhere to find another day. they just seem to have been very proud of themselves and enjoyed the handiwork that they did. they got their glory and will stick around and possibly were in the business of doing more. we would like to find out later this morning what's the cronology of the events to killing the police officer in the first place. it sounds like he may have been ambushed in his car and they brought all the attention on themselves, or maybe he encountered them already and they had gone to his vehicle to use the radio and ambushed him in the vehicle, we don't know that yet. that's the problem here is what's the mindset. so far the mindset has not been the suicidal martyrdom mindset

you see in most terrorist incidents, which is exactly right, very different from what you normally see if that was the intention to be a martyr terrorist. >> if you're just joining us, i want to catch you up to speed and also most importantly start off with this warning. if you live in the cambridge area, m.i.t. is warning individuals to stay away from the area of 500 memorial drive. there's a suspicious package at 500 memorial drive in cambridge, massachusetts. stay away from that area. and perhaps even more comp compelling compellingly, if you live in watertown or the surrounding area of watertown, massachusetts, outside of boston, massachusetts, there's a manhunt underway for one of the suspects thought to have been responsible for the terrorist attacks of the boston marathon on monday. it is suspect number two, the one with the white hat. police are saying if you live in watertown or the surrounding area, do not leave your home and

do not answer the door unless it is an identified police officer. >> this is a new photo that the authorities have released tonight of this suspect, suspect number two in the boston marathon bombings. you just saw him briefly there wearing a gray sweatshirt, a hoodie. that picture, we believe, was taken tonight. so if he has not changed, that's what you'll spot him in. if you do see him, do nothing except call authorities. do not try to apprehend the man in any way, do not approach him. call authorities because law enforcement officials are calling him a terrorist whose goal is to maim and kill. >> for those just tuning in, the other suspect, the one in the black hat, is dead. has been kleout with police ac cement ahorities and in a press release and press conference they gave not long ago. the suspect number one, the one with the black hat, was involved in this m.i.t. shoot-out where there was a police officer killed, a carjacking that went

onto watertown. and in the shoot-out in watertown, suspect number one was killed. suspect number two in the white hat still on the loose. if you live in watertown, do not leave your home or answer the door unless it is a clearly identified police officer. >> really, this area that began with the boston marathon bombings that killed three people and wounded more than 100 has claimed more victims overnight with an m.i.t. police officer dead, and a transit police officer from the area has been shot and wounded. so two more victims added to this incredible week that we have seen here. >> and what we do know is that the police officers know the names of who is responsible for the boston marathon attack. we know that for sure, simply because they have one in custody who is dead. and so while we are looking at the chase, what's also going on in law enforcement is a whole bunch of connections now being

made. who were these guys? why did they do it? were they solo? you are seeing lots of things on twitter in the way of about relations or who they might possibly be, people who have gone and disappeared from states weeks ago. there's going to be lots and lots of information coming out. the key point for a case, that's what matters, if you catch someone to have a successful case, is going to be, did they have ties to any other people? it doesn't matter if it is international or domestic, were they acting alone just the two of them by themselves or were there others involved? and that's where we are looking at the chase, but right now there are a whole bunch of people also doing that work to make sure that we end this case with the capture of the second suspect. >> that's really what is so remarkable about the case. even though one is dead and the other is being sought by what i imagine hundreds if not thousands of police officers in the area, well, close to 10,000

police officers in the area of watertown, massachusetts. again, i hate to repeat myself, but if you are just waking up and live in watertown, do not leave your house or answer the door unless it is a clearly identified police officer. but what's remarkable to people is we have come this far and still do not know their names and the public still has no idea what their motives were. none. or even the idea of if they are domestic or international. >> exactly. did they have motives of two guys getting together to wreak a lot of havoc on the city or was there something more, bigger, larger, something having to do international. why are they keeping the names close-hold? number one, it is not necessary to get the names because all we care about is the chase. but also, these people have family members. okay, and -- >> we want to play you again sound from the news conference that happened just a short time ago, which really unveiled some of the details in this extraordinary night and tied

this police chase and this shoot-out back to the boston marathon bombings that happened on monday. let's listen in. >> the most important message that we are doing right now is for public safety and the safety of those people in that neighborhood. we are asking everyone to shelter in place for the time being, not to leave their homes, if they see something suspicious other than a police officer coming to their door, they should call 911 immediately. we also want to forewarn motorists that are traveling through this particular area, even though we are locked down in this neighborhood, that they should not stop for anyone and pick up anyone along the side of the roadway. what we are looking for right now is a suspect considered and consistent with the description of suspect number two, the white-capped individual who was involved in monday's bombing of the boston marathon. he was -- there was a picture, a

video from the 7/11 in cambridge last night that he is dressed in a gray hoodie-type sweatshirt. he's a white skin, caucasian male with longer, brown, curly hair. you have seen the picture, you all have it, that's the individual that we are looking for at this moment. >> reporter: that's suspect number two? >> that's suspect number two, the white-capped individual. >> reporter: suspect number one was shot then? >> that's correct. >> reporter: so suspect number one was -- >> i want to be clear, we'll do regular updates to this, but right now we are in a public safety mode here. our immediate concern is for those people in the neighborhood up there. we have an active search going on by tactical teams to locate and apprehend this particular individual. he should be considered armed and dangerous and is a threat to anybody that might approach him. so please use extreme caution and stay in your homes. if you hear something, if you see something unusual, we would

like you to call 911. >> that was a police officer giving the latest on the investigation about two individuals suspected for committing the terrorist attacks in the boston marathon. one of those individuals, the one with the black hat, suspect number one, has been killed in a shoot-out with police. suspect number two still at large. he's the one with the white hat. there's a photograph of him earlier at a 7-eleven. you are told not to answer your door fals there's a clearly identified police officer there. john berman with me this morning has more from cambridge. >> m.i.t. police are saying police have investigated a suspicious package in the area of 500 memorial drive that presents no danger to the m.i.t. community. that's an update on something we told you a little while ago. there was concern about this

package. let me tell you why there's concern about packages on the roads in the boston/cambridge/watertown area. during this police chase, the police believe the suspects threw explosives at them through the windows. now, it is just some of the information police are sifting through right now. it may turn out to be different after they are following these suspects. >> clearly suspect number two in the white hat, clearly there's concerned he's wired with explosives. because we saw an individual who police later let go free. we saw the police force him to take off all his clothes. we saw him detained by police and he was later allowed to put his clothes back on and walk away. but that's how worried they are that the individuals are wired with explosives. >> that's another reason why people should stay indoors in watertown and be cautious.

you don't want to be mistaken by police trying to get someone who did a couple horrible things here, mistaken to the police as a suspect. they want to clear the streets, the sun will come out relatively soon, and then they will hopefully apprehend him. i want to go back to the point of why they are not releasing the names even though the names are being circulated on some websites. so there is a privacy issue important here. the suspects, whoever they are, have family members that are being told right now that their sons are responsible for a heinous crime. you want to make sure they are protected and notified. while we may have all sorts of opinions about the two men who caused the bombing in boston, they have family member, friends, roommates, whoever else that need to be notified that this is going on. so as i said, we are looking at the chase with a whole bunch of other stuff going on. >> i have an interesting point

you and tom fuentes made about where the men have been located. the shooting began less than two miles away from the boston marathon finish, four days after, the fact that the men did not move very far from where they allegedly performed the terrorist acts, what does that tell you? >> it makes me a little nervous for a couple things. it could mean they are unsophisticated and as tom said, they are like arsonists and wanted to see the whole city on edge with the suspicious packages, but what you don't know is where they here because they are clearly armed and clearly had explosives, are they clearly here to also maybe put a bomb somewhere, they put a suspicious package here. i don't want to make people nervous, but that's why you'll have a lot of the reporting of suspicious packages and people staying inside until we actually know why they were here. i'm hoping they were here because they were unsophisticated and couldn't get out. the boston marathon day is very

crowded. there's a lot of traffic. you couldn't have parked a car nearby, so they had to walk, my guess is, or take the t. so they decided to stick around. >> juliette, a former department official with homeland security, you talked about the reasons the names have not been released out of concern for the safety of the families to whom these two young men belong, in one case belonged in another case with the suspect who has been killed. there's another reason i suspect as well, they want to make sure the two were acting just them. they don't want to tip off, if there were accomplices or any other individuals involved, they don't want to tip those individuals off that they know who the two perpetrators were. so they still have an idea and ability to get the other individuals, if there are any. we have no reason to believe that there are any. >> so is it possible that it was just the two of them putting it together, very possible, very

possible. or did they have affiliates helping them out? affiliates in other states, so you have a massive investigation right now. and what were their backgrounds? were they students, waiters, actors? we don't know what their professional backgrounds were and what kind of ties they had to this government or other governments. there's a whole bunch of information that's going to come out about these guys, but the truth is we'll know their names soon enough. there will be lots of biographies about them and who they were, but right now there are different pieces in this investigation going on. and one of them is to insure the safety and security of the people around them. >> and the people in their community. that's an important point to reiterate. no matter what, you can't blame conservatives for right-wing extremists. you can't blame liberals for left-wing extremists. you can't blame the muslim community in america or the arab community in america for extremists in their midst. >> that's what i thought was so important about the fbi agent

who is doing a fabulous job, the fbi agent who is the head here, here's the picture. i'm not going to describe it. here is the picture. you can call it dark, light, whatever, and that's essentially it. these are the culprits, that's it. we don't know they represent anything bigger than these two. >> this news developing all night and all morning. we have been told there's a news conference we think in 20 minutes at the hospital where suspect number one was taken after he was shot. that is where he was killed. and i suppose this is a good time to bring everyone up to speed if they are just waking up. i'm seeing e-mails coming in, well, i'll tell you what, our coverage will continue on cnn in a moment. we'll bring you up to speed then on everything that's been going on all night. one suspect in the boston marathon bombing dead. another on the loose believed to be dangerous. we'll give you the updates just ahead. stay with us.