potential suspects who may not have flown on the plane. crews are about to head to a new search area. is there reason to hope that this time something will be found in we're live in australia as the search is about to resume. and what did passengers' families learn today during a closed-door briefing? cnn is in malaysia. we're pressing for answers. we want to welcome our viewers in the united states and around the world. i'm wolf blitzer. you're in "the situation room." we expect planes to take off at any moment for a new search zone in the southern indian ocean. the latest shift in the hunt for flight 370 is adding to concerns that time and resources are being wasted. nearly four weeks after the plane vanished, malaysian authorities openly acknowledge that a crime was likely committed and are providing new details about their investigation. our correspondents and our analysts are following every lead and every misstep they're here in the field, they're here

in the "situation room," while the search continues. let's bring in rene marsh for the very latest. >> as crews gear up for another day of searching, a new search zone is in focus after the old one turned up nothing. as for the criminal investigation and who may be responsible for the missing plane, officials now say some people have been ruled out while others remain under the microscope. 25 days in and malaysian police say they remain focused on the pilots and anyone who had contact with flight 370 before takeoff. ranging from those who prepared on board food to ones who packed the cargo. >> this is a criminal investigation. it is ongoing. we have not concluded the whole thing. >> reporter: malaysian investigators have been treating the disappearance of flight 370 as criminal since march 16th. four areas of interest -- hijacking, sabotage and personal or psychological issues.

so far police say all passengers have been cleared in those four categories. as for mechanical failure, it's still on the table. aviation authorities are investigating that. meantime, the search zone shifted yet again. ten planes and nine ships are now zeroing in on an area in the indian ocean. slightly eastward of the april 1st zone where they found nothing. despite the dead ends, there's no talk of quitting. >> i think if you have the australian prime minister what our long-term intentions would be, he'd say we'll be searching for this aircraft till hell freezes over. >> reporter: more ships have been dispatched including a british submarine with sonar. on board is a pinger locator designed to find beacons on the black boxes, which will stop pinging in days. if they haven't already. and what about those satellite images? we haven't seen any new ones in a while, and it is unclear why.

if you remember, we saw many day after day just last month. it could be officials wanted to put the brakes on false hope. many of the objects spotted turned out to be garbage, but one expert suggests it could also be the best eyes people on ships and in planes are already in the zone. he says, you use satellite images when you don't have anything else. >> let's hope they find something out there. stand by. let's check in on the search area right now for flight 370 and the move to a new area that's even closer to the australian coast. cnn's kyung lah is in perth, australia, the western part of the country. what's happening in perth right now, as daylight is about to begin? >> wolf, you can see that it is starting to become daybreak here. and this is about the time that the first search planes take off. we're anticipating them to be taking off from this military base shortly. and also we are expecting this morning within the next couple of hours or so the arrival of

the prime minister of malaysia. he'll be coming here. he'll be meeting the very teams that have been taking to the sky, have been taking to the sea, shaking their hands. he's doing all of this in front of cameras. also later today he's scheduled to meet with the prime minister of australia. part of this is to try to bring the malaysian authorities as well as the australian authorities together to show that there are people in charge here. but what's happened here as far as the search, as you point out, they've cleared one area. they're now picking up and searching a new section of the indian ocean. having to comb through that area and still, wolf, no debris. wolf? >> i assume if they don't find anything in this new area they'll keep searching other adjacent areas? is that the game plan at least for now? >> that is the game plan. when i was up on the p-8, you can see it very clearly, the way they spread it out every single day is they create a rectangle. then each country has its own little section of that

rectangle. they basically mow across it at a very low altitude, back and forth across that rectangle. once that's cleared they draw a new square and mow across that. they'll keep doing that until there's a decision of the long-term plan of this entire search or they actually find something. >> kyung lah, we'll stay in very close touch with you. relatives are desperate for any scrap of new information about the fate of their loved ones. some chinese families got a private briefing from some high level malaysian officials. our senior international correspondent sara sidner has more on that. how did it go, sara? >> look, the families' frustrations, wolf, as you know, are off the charts. it's basically because they don't have yet the answers to two questions. they asked more than a dozen questions, very detailed questions, asking for different things, bits of data that they want to see with their own eyes. but ultimately they did not get the answers to the questions

they really want to know, which is where is the plane with their loved ones and what exactly caused the plane to disappear? let me let you listen to the officials who were in this meeting, the meeting lasted about three hours and what transpired when the media got their attention. >> we had a meeting with the next of kin just now, the next of kin from china. there are 29 of them from 18 families. it is a closed-door meeting. we had a very good meeting with them. we answer all their questions. and i cannot give you the specifics. >> reporter: is there anything new in the investigation that you were able to share with the families? >> that's a technical question. i'm not going to answer that question. >> reporter: so he would not answer anything about what happened in that closed-door meeting other than to say there

were 29 family members from 18 of the passengers that were on that flight. i can tell you there was still some frustration even after three hours of meeting with some high-ranking military brass and ambassadors were in that meeting as well. frustration because they felt like they didn't get their questions answered properly and didn't have enough time to ask even more questions to follow up, but ultimately, like i said, wolf, really what they want to know are the answers to the questions that the government doesn't have. they don't know where the plane is exactly, and they don't know yet and haven't ruled out anything as to why it disappeared. wolf? >> as far as you know, as far as we're hearing, sara, no new information emerged from that closed door briefing as far as the investigation is concerned? >> that's absolutely right. i mean, usually what happens in these briefings -- and we do know that folks in beijing, the families there, could also listen in to what was going on

in the meeting. some of these families, by the way, came back from beijing to be closer to the authorities here to make their voices heard, to try to get some answers. but there's nothing new. because usually if there is something new, we hear about it fairly quickly. some in the families say, look, we're tired of all these details. we just want the answers to our two simple questions. the authorities are saying we can't give those answers to you because we don't have them. >> sara sidner in kuala lumpur. let's get back to rene march along with mark weiss, peter goelz is also here and miles o'brien. peter, you know, you've worked with families in these kinds of heartbreaking investigations. what can malaysian authorities do right now to ease their minds a little bit? >> at this point, there's not much because this process of grieving family members should

have started -- briefing family members should have started the first or second night. this shouldn't have been the first one. it should have started early on so that the family members had been brought along with the frustrating nature of the investigation. now the family members simply don't trust a word the malaysians say. >> i think that's a fair point, miles, because credibility is so important right now. what else can the malaysians do to instill some credibility, some reassurance with those families? >> well, you know, it's hard when the well has been poisoned as much as it has, wolf. it occurs to me, when you think about the ntsb template of informing on a consistent daily basis, what the ntsb is sharing is not details of the investigation or specifics because they may not have them, but it's just the idea that they're updating people and treating them with a level of respect that they deserve. and unfortunately, so much time

has passed and so many briefings have been missed, if you will, that it's -- i think it's all but impossible to regain their trust. >> tom fuentes, you're an assistant director of the fbi. now authorities say this is a criminal investigation. malaysia airlines says they're changing security in their cockpits. no longer can a pilot or co-pilot be alone in a cockpit. someone will be inside with that person at all times. this is what the u.s. security situation has been like for years now. does that suggest to you that the focus is on the pilot or the co-pilot? >> or the crew. you know, on the other hane han have this security policy of someone being in there. it's kind of contradictory poli policy. but what mile just said is exactly right. whether it's the criminal investigation where you're not allowed to disclose the details or the aviation aspect of searching for the plane, you can discuss the process even if you don't discuss the results. and that can go on beginning day

one, multiple times a day, briefings for the families, briefings for the media and you can completely discuss here's how we're going about this investigation even if you don't give up every single detail. >> what does it say to you, mark? you're a 777 pilot. about the focus of this investigation? >> to me it says that they're finally recognizes the fact that they believe it's now coming from the cockpit. maybe they have some more information that they haven't disvul jed as we've been told. if it's a criminal investigation, that information wouldn't be let out. we don't know who was in the cockpit, whether a crew member. >> why aren't they -- they're not -- they're also not ruling out mechanical failure. >> right. that's still on the table. but i will say this. when we heard from malaysian police they made it very clear that their area is the criminal side of things. they're police. they look at the criminal possibilities. however, it doesn't mean that

mechanical issues did not play into this at all. it's just not their area of expertise. it's not their focus. however, i can tell you both malaysia airlines as well as the civil aviation department there, they are looking into the mechanical possibilities of something going wrong with this plane. so that's why it remains on the table, but we're hearing so much about the criminal aspect because that is their focus. >> miles, you know, the international air transport association, iata, as it's called, is now putting together a task force, a panel of experts to come up with recommendations to make sure we don't have to go through this kind of investigation down the road, to learn lessons from what has happened right now. they want to report by the end of the year, by december. there are a lot of lesson wes all need to learn from what's happened. >> there's got to be a way of coming up with a way to track aircraft in a way that can't be

tampered with but yet preserves the safety issue. pilots don't like to have any box in the airplane that they can't turn off in case it's burning. maybe there's a way to have a satellite uplink for aircraft so you know where they are that has some kind of augmented fire protection mode in it that makes it impossible for somebody to defeat it who has a malicious intent in mind. that's key, if we knew where the plane was, that -- well we wouldn't be here on day 26, would we? >> hold on for a moment. we're going to get back to this mystery of flight 370 in a moment, but there's some breaking news that we're following right now out of ft. hood, texas. let's go to our pentagon correspondent barbara starr. what are you learning? >> wolf, at this hour, officials at ft. hood are telling cnn they have an active shooter on base. i've just gotten off the phone with a source who works there. this official telling me there is an active shooter right now

at ft. hood. in fact, ft. hood's twitter account is advising all personnel at this time to shelter in place. wolf, the reports are very sketchy, very preliminary, breaking just now as we are talking about it, this official also telling me sirens are going off everywhere on base right now. security personnel obviously responding to this situation. we do not know, wolf, the full scope of it and exactly what is going on. but at ft. hood, texas, this really makes people quite concerned because, of course, this was the base in 2009 where an army major, major nadal hasan went on a shooting rampage, killed 13, wounded more than 30 and was convicted on all murder and attempted murder charges. so ft. hood obviously very sensitive to the situation of an active shooter on base. there will be plenty of

questions when we find out more details. what exactly is happening and how anyone potentially got on base with weapons and could have done something like this. right now, wolf, very sketchy information, but ft. hood officials are saying they do have an active shooter on the installation. >> and we have no information that this is one shooter, multiple shooters, do we, barbara? >> we do not, wolf. we just simply do not. ft. hood, we've all been there in covering the military. is one of the largest bases in the country. spreads out over many, many acres, many buildings, thousands of people come and go off that base every day. i will say that i think we all know most of these active shooter incidents really genuinely only involve one person. anything beyond that you're talking about some sort of major conspiracy. they generally don't turn out to be that, but look, we are just

in the initial moments of this. so the answer is we don't know what we have been told active shooter. but when they go -- when the skuf security personnel go into these tich types of situations, they'll sweep through and look for any indication of any potential perpetrator. >> stand by for a moment, because tom fuentes former assistant director of the fbi is here. you're familiar with these kinds of incidents. ft. hood as barbara points out they just tweeted all personnel on post are asked to shelter in place. we all remember what happened back in 2009 with major nidal hasan went he went on a rampage. attempted murder, convicted, 32 others targeting soldiers that were set to deploy to afghanistan. we have no information that what's going on right now is at all connected to that. but you hear the words "an active shooter" at ft. hood,

that i brs back awful memories. >> it does. but in that case the u.s. army and the fbi have a memorandum understanding that if the shooter is a member of the military and if the victims are military, then the u.s. army criminal investigative division will take the lead. normally a shooting like this on a u.s. military base, the fbi would have primary jurisdiction, but in this case, unfortunately because of the frequency of these type of issues over the years, they worked out an agreement with the army to let army cid investigate this. >> what if civilians have been killed? >> well, that's still going to be -- it's an army base, so it's a u.s. government reservation. authorities from the state of texas will have no jurisdiction on that base. >> barbara, just to recap what you're hearing from your sources, obviously, one of the largest u.s. army bases in the country, ft. hood, texas. there's a shooting incident under way, an active shooter somewhere on that base? >> that is our understanding at this hour, wolf. the source i just spoke to a few

moments ago said sirens are still going off. people are being told to shelter in place. ft. hood, the troops who serve there, wolf, have seen some of the roughest combat over the years in iraq and afghanistan. many of them returning from a tour in the combat zone in afghanistan just several weeks ago people that we here at cnn know very well and that we have dealt with over the years so many times. and of course it also brings back memories right here in washington. just a few months ago, the shooting at the washington navy yard. how to protect u.s. military bases in this country when they are part of all our communities, a real challenge for the pentagon, wolf. >> certainly is. barbara, stand by. everyone stand by. we'll continue to follow the breaking news out of ft.hood, texas, an active shooter apparently shooting incident under way there right now. we'll get more details. we'll follow that and get back to the mystery of flight 370. i love to eat. i love hanging out with my friends.

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this is cnn breaking news. there's an active shooting incident under way right now at ft. hood, texas. very disturbing development. ft. hood telling everyone to shelter in place. let's bring in our pentagon correspondent barbara starr. you're working your sources. we know this is an ongoing event right now, barbara. update viewers who are just tuning in right now what we know. >> wolf, the details are very sketchy at this hour. but ft. hood, texas, now has an active shooter incident under way. we do not know if the shooter

has been dealt with yet by security forces. we don't have any status on any wounded or fatalities in this incident, but a short time ago i got off the phone with a source at ft. hood who told me it is an active shooter, it is serious and that sirens are going off everywhere. people at ft. hood on base are being told to shelter in place. first cavalry division, a major unit at ft. hood, told to go into their offices, shut the doors, stay away from windows. these are very typical security precautions, obviously, when a major facility, when any facility is dealing with an active shooter incident. we also have just gotten word that a nearby college, central texas college, has now closed and is ordered all personnel and students to evacuate their central campus. obviously near ft. hood. the military, wolf, since the --

especially since that incident in 2009 at ft. hood when major nadal hasan opened fire on soldiers, killing 13, wounding more than three dozen, the u.s. military has instituted very significant security procedures when these incidents happen. people do not get in or out. nobody goes through the gate without the correct paperwork, without the correct identification. people are told to shelter in place. there are substantial security forces on ft. hood. but i think one of the things that keeps everyone up at night so much is military bases in this country, we saw it here in washington at the navy yard. they're part, as we talked about, part of everyone's community. the military wants to be part of the community. they don't want to be in lockdown. they want to interact with their neighbors in the towns the and cities where they're located, so this becomes a security

challenge at times. to be clear, we don't know who the shooter is in this incident. we have no idea of the person's identification. we can only surmise that security forces on scene are trying to get this resolved as quickly as possible. >> one of our reporters on scene just recorded this a few minutes ago. >> reports, no confirmed reports but there are reports of multiple people shot. the active shooter allegedly showed up in multiple buildings firing shots at people. there are also reports of at least one injured but yet all of those are unconfirmed. as of right now the only thing we know for certain is ft. hood is on lockdown and everybody is being advised to shelter in place. >> that information coming from kcen. and ft. hood officially tweeting just a few minutes ago, all personnel on post are asked to shelter in place. you see the tweet right there.

we're also hearing, barbara, that the shooting incident occurred at the medical center, at least i think it's called the darnell medical center on the base. ft. hood is a huge, huge facility, isn't it? >> it is, wolf. they have multiple medical facilities there to deal with both the general health of the troops and their families that live on base and in the area. they, of course, because so many troops have served in the war zone over the years, they deal a lot with the wounded warriors that come back. they offer counseling for those who are suffering from post-traumatic stress. in fact, major nadal hasan was an army mental health psychiatrist, psychologist who offered that kind of care. ft. hood has taken a lot of effort in its medical facility. so if this is happening there, it just really adds to the

terrible feelings that everyone is going to have about another one of these situations, wolf. the troops have served time and time and time again in the war zone over the last 15 years. i can tell you a number that we here at cnn know very well recently came home from a tour in afghanistan just several weeks ago, so they would be getting, possibly their inprocessing, medical care when you come back from a war zone, you go through all your medical checks, they'd be getting reacquainted with their families, of course, after being way so many months. ft. hood has paid its dues big time over the years, wolf. >> and waco, texas, which is not that far away, as you know, barbara, waco police are advising folks in the area -- there you see the tweet from waco police. authorities are advicing those on post to stay away from windows, keep doors companiesed and locked. injuries are being reported.

that coming in from waco police. ft. hood, texas, the scene of the major nadal hasan massacre in 2009. he's been convicted. in 2013. 13 counts of murder, 30 accounts of attempted murder. he was found guilty of targeting soldiers he wanted that were being sent to afghanistan. he said he wanted to protect the taliban and afghanistan and its leaders from the u.s. military. during his trial he declined to make a statement. 12 days of testimony. tom fuentes, our law enforcement analyst is here. this is escalating. it sounds more ominous when we get a trickle of information coming in. >> right. the last information makes it sound like it's not a contained situation and they think the person may have left the base and is endangering local residents outside the base. in the case of hasan, we had the

army's police department were on site in about two minutes and engaged in a shoot-out with him and stopped him from any further shooting. in this situation, we don't know how soon the police responded, when they were notified to respond and whether or not it has been contained. so all of that has yet to be determined. >> i'll put it back on the screen, that waco police tweet that just went out. i'll read it once again because if, in fact, they're telling folks in nearby waco, texas -- here it is, authorities are advises those on post to stay away from windows, keep doors closed and locked. injuries are being reported. you can hear the sirens still wailing all around the base. this incident is by no means over. >> the injuries being reported, are they on the base and is this confined to the base? or are injuries reported in the city or local towns and colleges nearby? that's a much worse situation. if it's contained on the base,

you know, the texas department of public safety will surround the base, provide all kinds of assistance, the local sheriff's office, to contain it, but it's really an army matter on the base. but if this spill ps ovs over a out in the community, it will involve state and local law enforcement from texas. >> barbara, you've been to ft. hood on many occasions. do we know what steps have been implemented at ft. hood and presumably at other military bases around the country in the aftermath of the major nadal hasan massacre back in 2009? >> one of the big questions is how does someone get these kind of weapons on to a u.s. military installation. let's walk through that for one second here. ft. hood, tense of thousands come and go from that every day. they have stickers in their cars, permits to get on base.

they're waived through a gate because traffic has to keep flowing. if they're permitted on to the base because they have the right paperwork on any given day, it is not likely their cars will be searched every time they go in and out. it is assumed they're acting appropriately and legally. that's just the way reality is. there are other troops who have personal weapons that may keep them in the base armory, they may keep them locked up there and they'd have to retrieve them and get permission and take them out of the armory. this comes down to the question perhaps of in some fashion weapons getting into the base in an illegal manner or from someone who had permission to be on the base but, you know, obviously evil intent here. we don't know that yet. but it is because these bases are so large people move in and out of them all day long.

those who have permission to be aboard the base typically their vehicles are not searched every day, wolf. >> our justice reporter is telling us, barbara, at least one casualty has been now confirmed. i'm not sure if that means someone has died or someone has been injured, but one casualty has been confirmed. we are also told that federal agents are en route to ft. hood. tom fuentes, you're the former assistant director to the pb. you point out the u.s. military will be in charge of this investigation. but they'll get backup from the fbi. >> the fbi office in waco will send as many agents as they need. and more can be flown in from every other place in the country. the fbi will provide direct assistance and they'll provide forensic assistance in the crime scene investigations to follow. they're just saying later on the jurisdiction will probably fall to the u.s. army by a prior agreement with the army and the fbi.

>> so right now as we look at this situation, you assume they're really beefing up, they're really sending forces there, local, state, federal, to ft. hood to make sure they can quell, stop this, whatever is ongoing. >> if have you a fugitive situation now with an individual on the loose on the base or out of the base or anywhere in texas, and you have a krim scene. if you have people who have been wounded or worse, then that will require a lot of forensic work as well. so there will be a lot of response on the part of the fbi and the military itself. >> i think we have one of the soldiers on ft. hood on our phone line who has been asked to shelter in place. is this dylan? can you hear me? >> yes, sir, i can hear you. >> tell us where you are, if you can. >> i'm in my barracks room. it's building 18,015 right up at the main gate. >> tell us what you've seen and

what you've heard. >> well, i haven't seen anything. but i've heard sirens coming from across post. nowhere near me, but it sounds like it's coming from around clear creek. >> are those sirens still going off, dylan? >> yes, sir, they are. you can barely hear them. >> because you tweeted a little while ago -- and i think i'm reading it right now. attention, there is an active shooter in ft. hood. if everyone could please pray for everyone's safety and especially law enforcement. you're sheltering in place. are you inside a building, inside a room someplace, right? >> yes, sir. >> are there other folks with you? >> my roommate is. >> that's it. and you also tweeted that you can clearly hear sirens going off. you say these sirens are still going off, dylan? >> yes, i can barely hear them but i can still hear them. >> there's no indication this incident is over by any means, is there? >> no, sir.

>> dylan, you're a private u.s. army. is there any indication of some problems in the days leading up to this on the base? >> no, sir. i haven't even heard anything even on the local news. >> how are you doing, dylan? >> what was that? >> how are you doing? >> i'm doing good. i'm just a little nervous on what's happening. >> dylan, good luck. we'll stay in touch with you. we're going to continue to follow the breaking news. an active shooting incident under way right now, ft. hood, texas, not far from waco, texas. much more on the breaking news right after this.

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call... and ask about all the ways you could save. liberty mutual insurance -- responsibility. what's your policy? this is cnn breaking news. >> there's an ongoing shooting incident under way right now at ft. hood in texas. a major u.s. army base right in the heart of texas. i want to go to the white house. our correspondent michelle kosinski is getting more. i take it, michelle, the president has been informed about what's going on? >> yeah, he's been traveling today in the midwest. but officials say he's been informed of reports of a sooting. they're getting information as it comes. just about 20 minutes ago when i asked the white house what they were hearing, they were saying that they were just hearing

press reports. so they were getting information really as we were. now the president has been informed of reports of a shooting. he's getting that same information. they're going to keep him updated throughout the evening and that they would in turn inform the press throughout of what exactly is going on. but it's obvious that the information -- even though this may have happened more than an hour ago now, information is slow to come out. it's even slower to reach sometimes the top levels of our government, especially when they're in a travel situation and the president was on a plane for some time today, wolf. >> i just received a formal press release from ft. hood, texas, from the ft. hood press office, among other things, public affairs office in ft. hood saying that, quote, there has been a shooting at ft. hood. and injuries, plural injuries, are reported. emergency crews are on the scene. no further details are known at this time. as further details are available, they'll be released through the ft. hood press center. evan perez is our justice reporter. you've been watching what's

going on. what else are you hearing? >> wolf, we know that federal agencies have now activated. they're now en route to try to assist local authorities and the military officials who are obviously going to be responsible for securing this situation and try to figure out how many casualties there are, how many shooters or if there was more than one shooter. and we are told that there is at least one casualty. that federal authorities know of at least one casualty, but we don't know the status of that person. we also do not know whether the shooter is still on the loose, whether that person has been put down. this is a very fluid situation and takes some time especially for federal authorities to determine what is happening. >> we just spoke to a private on base who says the sirens are still going off. >> the base is on lockdown. we know it will take them a while to go through the buildings to determine there's no further danger. >> we're all concerned as a result of what happened back in 2009 with the shooting from major nidal hasan.

tom foreman is here. >> ft. hood is in between waco and austin. it is about 214,000 acres. a big facility. spreads out this way. it is ft. hood right here. that community college we're talking about is right over in this area here. this is the clear creek gate, one of the main entrances to ft. hood. and over here is the burning back gate. this is where we've been hearing that reporter locally down there talking. the gate that's closed is this gate in here. as we move in closer here, we can move into the northwest corner over here, wolf, this is where major nidal hasan's shootings occurred, off to the western side. now what we're talking about more, you mentioned the hospital earlier, the hospital is right over here. it's a big complex built in the 1960s. many, many troops who come out of afghanistan or iraq or anywhere around the world come to this base may very well go

through this hospital at some point. it also serves tens of thousands of military families all the time. people coming there for regular medical treatment, having babies, all sorts of things. it is worth noting in all this the corps headquarters down here are not terribly far away, right over here on ft. hood. huge community down here, wolf. and it is really right in the middle of it that they're talking about all these reports right now where this alleged shooter may be, right in the heart of ft. hood. wolf? >> we're told from bell county sheriff's office that deputies are now securing the perimeter around ft. hood. an incident still under way. this is an ongoing shooting incident right now. formal statement from ft. hood saying there has been a shooting at ft. hood. injuries are reported. emergency crews are on the scene. we'll continue the breaking news coverage right after this. [ male announcer ] this is the cat that drank the milk... [ meows ]

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there's an ongoing shooting dinnerway at fort hood, texas, statement from fort hood, public affairs office saying there has bean

to get to any suspect in this situation. the fact that fort hood is saying there are injuries, multiple injuries, an indication of how serious this may be, the local community there in texas, obviously, bell county sheriff, colleen texas, the city just outside of the gate of fort hood also saying it's medical and emergency personnel are on stand by with ambulances to help in any way that they can. fort hood has a medical center. they have very highly trained medical personnel. many of them have done tours in the combat zone. they know how to deal with these

situations. it's the scope of this incident that we do not know at this hour how many people may be suffering from injuries. just how serious this may be. at this hour the base remains on lock down in terms of people are being told to shelter in place, to stay in their offices, their rooms, close their doors, stay away from their windows. a local leg nearby has been evacuated. all of its personnel and students have been told to leave and go home. as you reported earlier nearby waco, texas, also taking security precautions. as we see in these incident, wolf, even when we don't know the full scope people have learned to react and try to lock things down as much as they can as quickly as they can to keep everyone as safe as they k-wolf. >> stand by. brian, you're getting new information. what your learning? >> reporter: some new information i spoke the fort hood police department. as of just a few minutes ago the

shooting situation was still active. security personnel were pursuing a shooter but this person at the fort hood police department did not know if the shooting, this incident was contained in one area or not and as we know that's a massive base. if they have not contained it in one building or one specific area the possibilities are very vast where this person or people could be going. that's what i got. still an active situation. security personnel pursuing a shooter. not sure if it's contained, wolf. i want you to repeat the headline out of your report was just for a second. >> reporter: sure. just as of a few minutes ago according to the fort hood police the shooting situation or the situation overall was still active. security personnel were pursuing a shooter. they were not sure the fort hood police whether this situation was contained or not. contained in one area possibly one building i asked this person could not tell me that, wolf.

>> stand by because our justice correspondent pamela brown is getting more information. >> reporter: getting more information. we're hearing from a source a law enforcement source, wolf, that brian just said the shooter is said to still be at large at this hour. this has been ongoing for little over an hour. fbi agents are believed to be on the scene right now there at fort hood and joining local law enforcement, atf agents are en route to the scene. there's already a massive effort under way to find this shooter an also to assess the situation. typically shootings like this happen within minutes speaking to former law enforcement agents and investigators on the phone today they are saying that typically in a situation like this you have a shooting that happens in minutes, normally a single male but at this point we don't have any confirmation as far as whether there's only one suspect or more. we have learned, wolf, people have been asked to shelter down,

stay inside the buildings, stay away from the windows which is common practice when you're dealing with a situation like this where it's fluid and believed to be a suspect at large. so still ongoing. >> lieutenant donny adams is on the phone with us. what's the latest information you're getting, lieutenant? >> we still have an active shooter on post. we responded with our deputies to help secure the perimeter, the gates, also the state troopers are responding with us. right now our function is to help secure the perimeter, fort hood military police is actively engaged in an ongoing incident on post. >> how long has this incident, lieutenant, been going on, do you know? >> it's been going on close to an hour now. >> do you have any good sense -- is it one shooter or multiple shooters? >> i cannot confirm either. i've been hearing reports of both. >> of both.

do you know where the shooter or shooters may be on the base at fort hood? >> i do not have that information at this time. >> so everyone should shelter in place. that order is still in existence, right? this incident is by no means over. >> it is not over. still shelter in place. the post is locked down. >> we're hearing multiple injuries. do you have any more specific information as far as the injuries, casualties, any confirmed deaths or people just injured? >> i cannot confirm any of that. >> where do we stand right now? you basically got your own forces, you're helping out to try to secure the perimeter around this base, is that right? >> that's correct. >> all right. thanks very much, lieutenant donny adam, bell county sheriff's office. let's take a quick break. we'll be right back.

shoves shfds sheriff's deputies

. there's an active shooting dinnerway right now at fort hood, texas. multiple injuries reported by fort hood itself. we're told president obama has been informed on what's going on. now we're told secretary hagel, the defense secretary has also been informed of the shooting at fort hood. he'll be briefed as events

unfold. local police, federal agents, they are coming in to bolster security on this base and a lot of us are worried especially because of what happened in 2009 with major nadal hassan when he went on a rampage. >> state and local police will provide perimeter security. this is an enormous base so even that task is huge for them to do that. the federal agencies will be responding normally the fbi would have primary jurisdiction for serious crimes on a base. but, by agreement the army will take this in the end. the fbi, atf, other federal agencies along with the u.s. army police that are there, and their criminal investigative division who are also there will be controlling the investigation inside. right now it's too soon to tell what the situation s-whether they have the subject contained, barricaded with a hostage, or still running loose. >> we're told the shooting incident is continuing. the shooter or shooters, we're

not clear if it's one or multiple shooters still at large. we are told there are injuries right now. we'll stay on top of this story. much more coming up. thanks for watching. erin burnett "outfront" starts right now. good evening, everyone i'm erin burnett we want to begin with our breaking news. there's an active shooter at fort hood in colleen, texas. this is an ongoing situation. the base is in lock down. security personnel are chasing a suspect. military officer on base at fort hood tells us he heard sirens and has been told to shelter in place. there are more than 40,000 military personnel on the fort hood base. the president of the united states has been briefed on this fluid situation and i can tell you right now literally this information just coming in