let the state come in and do it. one thing it turns out we are great at in this country is drilling holes really, really, really, really, really, really deep in the ground for oil and gas purposes. one thing we're not so great at is figuring out what to do with those holes when things go wrong with them. this leak is so big it's a quarter of the greenhouse gas emissions for all the state of california. four months to fix it? watch this space. "msnbc live" is next. ♪ >> good morning, welcome to "weekends with alex witt." new developments on a number of fronts in the san bernardino terror investigation. here's what we know at this moment. word that isis radio says its followers carried out the san bernardino shootings. the fbi said it's investigating the shootings as an act of terror and the fbi said there's no evidence that the couple acted as part of a group or a terror cell. and new word from president obama this morning saying we will not be terrorized in his weekly address to the nation. >> it is entirely possible that these two attackers were

radicalized to commit this act of terror. and if so, it would underscore a threat we have been focused on fore years. the danger of people succumbing to dangerous extremist ideologies, we know that isis is encouraging people around the world to commit terrible acts of violence. >> and we are now seeing pictures of the woman involved in the shootings. syed farook and tashfeen malik were both killed in a shoot-out with police after the deadly attack. attorneys for the farook family say it's too soon to say whether the couple was driven by political or religious motives. >> we are all wanting justice and we're all wanting to make sure we find out anyone who may be affiliated with it, so we'll be protected in the future. but at the same time, i guess we best -- we need to be protected and respectful of one another's religious freedoms and due process -- freedoms of due process. and so that's what i would say

about that. the motive -- there's -- if the motive is very unclear. >> nbc's justice correspondent pete williams has more on this from washington. pete, good morning. >> alex, law enforcement officials say newly discovered information suggest that at least one of the attackers was strongly committed to isis. but the fbi says this does not mean that the shooting rampage was directed by isis. just as wednesday's attack on syed farook's fellow county employees began -- >> male in black clothing, still firing rounds. >> reporter: investigators say his wife tashfeen malik sent an endorsement of isis to her facebook time line. she pledged support for the leader and the company took her profile down. the fbi director today declined to comment on that, but explained why this is now a terrorism investigation. >> the investigation so far has developed indication of

radicalization by the killers and of the potential inspiration by foreign terrorist organizations. >> reporter: but he declined to specify which terror organizations and there's no sign that they were in direct contact with any terrorists here or overseas. >> we have no indication that these killers are part of an organized larger group or form part of a cell. there's no indication that they are part of a network. >> reporter: comey stressed the investigation is only 50 hours old and there's no way to tell yet what the couple's intent was, why they attacked the county facility or whether they planned other attacks. an internet media site posted a message saying that the attack was carried out by two supporters of the islamic state. a roadblock in the investigation is analyzing computers and cell phones left behind in the apartment in redlands. the fbi said those devices were damaged. >> i was told in a nearby trash

can, they were found by our investigators. >> reporter: and they're delving into tashfeen malik's past. she was raised in saudi arabia and met the man who would become her husband online. she arrived in the united states on a flight to chicago a year ago. a big question for investigators, did she radicalize her husband? and did she come here intending to do that? the fbi has concluded its search of the apartment where the couple lived. officials say they found three more remote control pipe bombs like the one left behind at the scene of the shooting. the fbi director and the attorney general are once again urging people to report suspicious behavior. i asked if they're aware of something that somebody missed that could have prevented this attack, and comey said based on past experience that's reasonably likely. >> pete williams, thank you. we have two reports from california this morning. nbc's morgan radford is at the suspect's home and blake mccoy is near the massacre in san bernardino. morgan, we'll begin with you

here. what's the latest on the investigation into the couple's motives? >> alex, that's exactly what we're trying to figure out this morning. the fbi has said they're investigating this as an act of terror, but here we are in the exact neighborhood where the suspects live. we're standing on the sidewalk where they too walk, quiet, unassuming neighborhood and just inside their home behind me, we learned there was an entire bomb making factory inside. ammunitions and we're learning about the people who lived there. 28-year-old syed farook was described as shy, even introverted. he went online to meet his wife, tashfeen malik. she moved to saudi arabia and came to the united states just two years ago. the couples in the neighborhood here are shocked. take a listen to what the family's lawyer had to say about why they think this is surprising. >> there's never been any evidence that either of the two alleged shooters were aggress e aggressive, had extremist views.

they were totally shocked that this could take place, as shocked as anybody else was. >> reporter: alex, those lawyers also said that syed farook was made fun of by his colleagues at work for his beard. we also learned from the fbi that tashfeen malik pledged allegiance to isis just moments before the attack. they did have a 6-month-old daughter who lived with them here in this home. she's now in protective services. but investigators are asking a lot of new questions this morning. did she in fact radicalize her husband? why did they choose the site of the holiday party? a lot more questions for investigators to look into this morning. >> they sure are. thank you so much for that. let's go to nbc's blake mccoy. he's in san bernardino by the scene of the shooting. so blake we have heard from the head of the fbi on this. what is he saying? >> well, the head of the fbi as you heard in pete williams' story there is still acting under the belief that these two were acting alone. not part of a larger terror

cell. we are here at the site of the original shooting from this wednesday. you can see it is still an active investigation behind me. we are not being allowed closer to that building this morning. this is a last remaining active crime scene. the fbi has finished their investigation of the home. they're taking computer hard drives as well as notebooks and others they deem necessary for the investigation out of that home. and overnight, they also cleared that bullet riddled suv from the intersection where it has been sitting since that shoot-out on wednesday. so we are down to just one active crime scene as the detectives, the fbi, begin looking into what was that motive. they hope to find what i'm told are quote, golden nuggets of information on the computer hard drives and hopefully those crushed cell phones that were recovered here at the scene. alex? >> okay. a question here though, now that the fbi is treating this act as a terrorism case, how does this differ for example from a workplace shooting?

>> well, alex, one of the biggest differences if this was a workplace shooting it would be local law enforcement investigating which we saw over the first two days. now that it is considered terrorism, the fbi, the federal authorities have taken the lead. what that means for information now we're not quite sure. we do know that there were no more press conferences after the fbi took over yesterday. none are scheduled for today. so we believe access to information may be more limited from here on out. we have to see. >> okay. nbc's blake mccoy in san bernardino, thank you. let's bring in msnbc news law enforcement analyst jim cavanaugh. i know you've been following this from the very beginning. what stands out most to you at this point? >> well, i think the connection, alex, to international jihadist terrorism is the most significant event. they -- after the attack of the inland regional center, the woman pasted on a facebook page

her allegiance to al baghdadi, the leader of isis, after the murders. that's very significant. a known isis blogger had called them supporters so you need to take some aftershave lotion on your face if you don't believe it's international terrorism. what the investigators of the joint terrorism task force are trying to figure out is it inspired alone by the two, are i that connected to others locally or abroad? that's the question. when you slaughter people like this and you pledge allegiance to al baghdadi, i don't know if someone is looking for an isis i.d. card. this is what it is. it's international terrorism. now, the workplace attack, i don't think it's the main attack. i think that's a revenge attack. like the nbc reporter on the ground just said, maybe someone making fun of his beard. that may not have been mean natured but he might have accepted it that way. and he wanted revenge on his workplace before, maybe the main

attack where they were going when law enforcement intercepted them. >> the fbi has released one of the crime scenes very quickly, the apartment where the suspects lived. it seemed unusual. how about from your perspective? >> well, no, it seems kind of typical, really. i mean the way people work. they're kind of -- they're kind of closed minded. i'm not surprised family members don't know everything they're doing. they're very secretive, you know, they can keep their little bomb factory maybe just them or maybe a couple of other people helping them. you know, computer activity can be very secretive as well. the fact that they tried to destroy the cell phones and the hard drive, that is very interesting because if you're just two people acting alone, totally with no other connections why would you need to do that? you're pledging allegiance after the murders to al baghdadi, so

you're not trying to hide that apparently, so there may be other contacts and sympathizers. the fbi says maybe there's some low level contacts and that's what they'll be looking for. >> but the fact, you had news crews all over the inside of this apartment, pretty quickly after a crime scene like that. that seems unusual. is that not out of the norm for you? >> no, because what happens is, you know, under the law when we serve search warrants under the fourth amendment, once we're through doing the search and searching for the things described in the search warrant, particularly described bombs, guns, computers and so forth, the agents have to leave, secure the premises and the law enforcement has no more control over it. so you turn it over to the rightful owner, in this case the landlord. so then he has control and he can do what he likes. the intense media scrutiny, you know, they asked could they go in, this is good journalism. and he says, yeah, he could have said no. and of course they went in.

so, you know, it's not that unusual when you have this intense national attention on this slaughter. i mean, the whole country is reeling in the last 30 days f m from, you know, the paris attacks, the russian airliner, even the planned parenthood murders. we're all paying attention. it has a lot of intense scrutiny. >> from everything that you have seen and heard, from the fbi, and the other officials in san bernardino, any reason to believe more attacks are connected to this and it could be in the pipeline still? >> well, you know, we're just seeing a tempo of attacks that seem to be directly connected back to isis or daesh going right through. if you look at it in recent perspective, the bombing in ankara, turkey, a hundred people killed. the multiple attackers in beirut, the russian airliner, paris, now this may be inspired isis, but nevertheless, you see this tempo of attacks and that kind of encourages others to go along. so we have to be on our game.

look at the security guard at the movie theater, he was on his game at least noticing something. i just say this, alex, like churchill said in world war ii we're not made of sugar candy, we can deal with this. we have to work together to do it. >> well said, jim cavanaugh. thank you. well, a quick update on the story. the new york times for first time since 1920 is using space on its front page to call for greater gun regulation in the wake of several deadly mass shootings. next up, what happened to the baby left behind by the san bernardino attackers? that's new information this morning. and new information on tashfeen malik. what family members are saying about her. and we leave you with information about gun ownership in america following the mass shootings. ♪

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we are americans. we will uphold our values. and our free and open society. we are strong and we are resilient and we will not be terrorized. >> the president this morning standing resolute after word from investigators they're treating the attack in san bernardino as an act of terror. nbc's ron allen is at the white house with more on the political fallout in the wake of this mass shooting. good morning, ron. >> reporter: good morning, alex. word that it's being treated as terrorism, who they claim that president obama has been weak fighting terrorism here and at home. talk of being strong is pushing

donald trump further to the front of the pack. donald trump with an enthusiastic crowd, explaining how he'd deal with the threat of terrorism. >> if the people in paris or the people in california, if you had a couple of folks in there with guns, and knew how to use them, and they were in that room, you wouldn't have dead people. the dead people would be the other guys. >> reporter: but at the gun owners right event, ted cruz blasting away. >> we will not defeat radical islamic terrorism, so long as the president is unwilling to utter the words islamic terrorism. >> reporter: with the americans worried about terror striking at home, a new poll taken after the terrorist attacks but before san bernardino gives trump some of the highest numbers yet, 36%, 20 points ahead with cruz surging into second place. trump with top marks on handling isis. again, cruz second on both

fronts. gun rights and fighting terror, big gop issues as the administration tries to play down the fear factor. >> trying to channel it into the awareness of your surroundings to get to the place where you're living your life, but if you see something that doesn't make sense, you say something to somebody. >> reporter: and the leading democratic contender tries to strike a balance. >> i don't see any conflict at all between going after the terrorists with everything we've got and doing more on gun safety measures. i see no contradiction. >> reporter: out on the trail, the deep divide on the emotional issue endures. >> they're still out there talking about gun control measures. as if someone terrorists care about our gun control laws. >> reporter: and officials said they're redoubling efforts to fight terror abroad and protect the homeland. the president says his inability to do more to prevent mass

shootings and tighten gun laws is the biggest frustration for him in office. joining me now is philip bump from "the washington post." so you heard ron's report. how is san bernardino changing the dynamic out on the campaign trail, especially as officials conclude it was terrorism? >> well, after the paris attacks there was a new focus on foreign policy and on terrorism and a focus by the republican candidates looking at how people get into the country and the threat here in the united states. i think now that has happened, apparently. based on the evidence we have at hand here. and i think it makes that a stronger message for the republican party. republicans would like to make the 2016 election about foreign policy, in part because hillary clinton was secretary of state under barack obama. they see this as a point that they can pressure the administration and hillary clinton to their benefit. >> and is this an effort for hillary to distance herself from

the president or set herself up as being strong on terror? >> it's hard because she has to respond to the republican party and continue doing what she's doing which is solidify her base of democrats. it seems as though she'll win the nomination at this point, but she's still trying to make sure she's appealing to what democratic voters want to hear, which is things that we want renewed efforts on gun control. you know, i think that there are -- this was such a weird event in san bernardino because it had the traditional -- now traditional feeling of the mass shooting we're used to and it was terror related. so that makes it confusing for candidates and i think hillary clinton is in a weird spot because she has to deal with it too, while fighting two fights at once. >> we heard stronger words from the president this this week. but what are supporters saying on whether or not he's taking a strong enough rhetorical stance? >> well, i mean, there's a long standing debate over the extent to which the president is willing to call out radical islamic terrorism and you heard from senator ted cruz. the republicans are not going to

be happy with president obama. he is in an effective foil for the republican candidates for the presidency. democrats i think stand with him and have stood with him since 2009 as well. he's a very polarizing president. not just by virtue of the fact he's president in this modern time. so i'm not sure that what happened is going to change any part of his mind on how president obama has been. >> do you think he could be erring on the side of not being alarmist? >> that's his position. he is very good at not reacting strongly to things which i think is not always beneficial for a politician. and i think what we heard from him this morning was again stay calm, we're going to get through this which is effective for some people and not effective for other people. >> we talked about this earlier together because you're reporting this week, you point out for every 100 americans there are 110 guns. and you have one who is saying

as he is running for congress, he wrote an open letter to nra's wayne lapierre, i grew up in a family of hunters but i'm a father and a husband. despite the shooting, we saw congress the exact opposite of toughening the gun laws this week. how can we expect them to reverse their course and do something significant? >> i mean, honestly i don't know we'd expect that at this point. we saw in the wake of the sandy hook shootings in 2012, the big effort in 2013 to move something through congress. that did not happen april of that year. the same bill is brought up this week. it didn't get anywhere. you know, i think that the fact that this was a mass shooting that was apparently perpetrated by people who are inspired by terrorism makes it even more unlikely that those who are observing this event and who are generally disinclined to take action on gun control are going to be more motivated to do so because it's a weird hybrid of the things we have seen so

often. i don't know what would happen, what would need to happen in order for there to be some legislation passed with by congress, but i don't know why it would be this event. >> philip bump, thank you. a quick update about the baby left behind by syed farook and tashfeen malik. the couple left their 6-month-old daughter in the care of farook's mother when they carried out the attack. attorneys for the family now say the child is with child protective services. farook's brother in law is beginning the legal process of adopting the little girl. america on edge after the san bernardino shooting. how the conversation has changed for so many people. >> you don't think it's going to happen out here. >> i'm actually shocked that i'm not shocked. i'm just numb. >> you forget it because you become desensitized to it. >> i pray for peace on earth. and that we get it together as a society.

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now to the the weather. it is warm across much of the country, including right here in the northeast. but it's stormy in south florida and the northwest. the weather channel's kelly cass has the morning's headlines. >> alex, i wish i had better news than those in south florida. a downpour is likely in key west. we have a frontal boundary stalled out over this area and it wants to give us more rainfall. we had record breaking rainfall, over 5 1/2 inches in miami. and it looks we're still in for wet weather as we go through the second half of the weekend as well. first weekend of december. you know, we're not talking about a whole lot of cold air across the country. we have a parade of storms moving into the pacific northwest. that's going to bring the rain, the wind and eventually some that snow across the higher elevations into the washington cascades later on in the afternoon. tomorrow, we watch the snow levels drop across the cascades of oregon and even down here into northern california.

we start to see more precipitation. even monday, another storm is moving on shore. not just rainy times but windy along the coastlines. be careful traveling and a lot of rainfall between now and tuesday. some places can see up to a foot of rainfall. >> thank you for the heads up. here's the latest on the san bernardino investigation. isis radio says its followers carried out the shooting and fbi said they're investigating the shootings as an act of terrorism and there's no evidence that they acted as part of a group or a terror cell. who was tashfeen malik? and what drove her to gun down more than a dozen people? we're learning new evidence and we'll share it after the break. this winter, take advantage of our season's best offers on the latest generation of cadillacs. the 2016 cadillac srx. get this low-mileage lease from around $339 per month, or purchase with

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investigation there as an act of terrorism. joining me now from san bernardino, nbc's miguel almaguer. good morning. what are investigators focused on this morning? >> reporter: alex, good morning. they're looking at the destroyed electronics that could have valuable information on them. the fbi doing all they can to retrieve that information. the fbi also says that this investigation could take months. they have no motive but they say this is a terror investigation. this morning, a closer look at the husband and wife who many saw as an ordinary family until they murdered 14 and wounded 21. >> the investigation so far has developed indications of radicalization by the killers. and of potential inspiration by foreign terrorist organizations. >> reporter: the fbi now poring into the lives of syed farook and tashfeen malik. she was the newly americanized housewife from pakistan who investigators say pledged support for isis on facebook. he was the american born food inspector, the parents of a

6-month-old. >> we have several down. >> reporter: the couple may have planned their office party massacre in the home where police discovered pipe bombs, am knew in addition and tools to build ieds. the investigators say they took special care to destroy the evidence. >> this is something political because this brother he couldn't have done that. >> reporter: the calculated massacre would be the deadliest islamic inspired attack since 9/11 if officials confirm it's an act of terror. killed by police in a gun battle after the shooting the couple took the lives of mothers and fathers, sons and daughters. the youngest, 26, the oldest, 60. >> we are just all so sick of seeing families and -- get hurt

by senseless violence. >> reporter: this morning tears and heart break for the victims as police scour through the suspects' lives to search for a motive to the crime. there's no true way to know what the true intent was. again, a big part of the place is the digital footprint, the fbi doing all they can to retrieve as much information as possible. >> miguel almaguer, thank you. one of the biggest mysteries, who exactly was tashfeen malik and what drove her to gun down more than a dozen people and leave behind her infant daughter? nbc's stephanie gosk is at the home in redlands, california. what are we learning about her today? >> reporter: hey, alex, good morning to you. well, tashfeen malik went through a rigorous process to get into the country on the k-1 or fiancee visa. and then she applied for a green

card and got that too, so the question is if she became radicalized when did it happen and was there anything in the applications that the u.s. authorities missed? finally, a face to put to a name. and this morning new details about who tashfeen malik was. lawyers for the family described her as quote a typical housewife. who spent most of her time at this rented apartment. and they say the family didn't know her well. >> they have never seen her face because she did wear a burka. >> reporter: she spoke urdu and only broken english. she prayed five times a day and chose not to drive. >> she grew up in pakistan. at 18 or 20 years of age she moved over to saudi arabia. >> reporter: it's believed syed farook met malik on an online dating site and travelled to saudi arabia to marry. syed's sister told chris jansing, they barely talked about the past. >> we were only starting to get to know her. she was quiet and shy like him.

>> reporter: and a k-1 visa was granted. >> it's not an easy visa to get. you have to go bow biometrics and accomplish the bona fides of a marriage. >> reporter: they had a second marriage, mandatory within 90 days of entering the u.s. malik got her green card in 2015. she left behind a 6-month-old daughter before leaving with her husband to commit the bloody rampage that has stunned this community. christmas lights, and boxes of ammunition are a few of the items that were removed from their home. items that will be reviewed to learn more about the mother and wife turned killer. lawyers for the family say that malik was not actually alone in this house when her husband left to go to work. the grandmother was here as well, helping to take care of the baby. they say the grandmother stayed mostly upstairs and had no idea what the couple was planning. alex? >> so stephanie, that baby

contrary to reports that the couple took the baby some place to leave her with the grandmother, that's not true. they basically just went upstairs? >> reporter: that's right. there was a misunderstanding as far as the grandmother and the baby was concerned. we also learned that the baby's right now in the custody of the state, but that the sister of syed farook and her husband are trying to get custody of that baby which will most likely happen. >> all right, stephanie gosk, thank you. let's bring in don borelli, the former special agent in the fbi joint terrorism task force. good morning to you. okay, earlier this week, congressman michael mccaul, the chairman of the home land security department said there are a thousand terror investigations under way. talk about the logistics and the process. what goes into the terror investigation. >> it's pretty overwhelming number. you have physical surveillance, you have you're reviewing records, looking at digital

media. what the online presence, all of these things. trying to develop human sources of intelligence to figure out if somebody is just dabbling with, you know, jihad or if they're at the other end of the spectrum where they're getting close. that's the real challenge for law enforcement. one number that i heard that i thought was overwhelming is you have several dozen of these individuals that are kind of at the extreme level where they're requiring a lot of surveillance. you know, many cases, possibly 24/7. that burns up the resources really fast. >> sounds overwhelming. would you say it is? >> well, it's a challenge for law enforcement because they always have to readjust and reprioritize resources. and there's a set amount of fbi to do this investigation so you're pulling people off of other important programs like violent crime or white collar crime possibly to move them into terrorism investigations. so, you know, it's a challenge

for law enforcement. >> and also a challenge, i mean, you mentioned the digital footprint. it doesn't seem like this san bernardino couple left much of a trail there. what kind of a challenge is that? >> well, you know, they always say there's no such thing as fully erasing your digital footprint. now it will be tough for the forensic examiners that will have to try to reconstruct this on damaged cell phones and hard drives, but it's certainly possible. between the fbi and nsa there are capabilities out there and then you can subpoena records from, you know, for example, the internet service providers and so forth. the problem is that takes more time. you send out a subpoena, you wait for the information to come in. then once it's in, you have to analyze it. then maybe send out secondary subpoenas so that process is a bit more slow and methodical. >> yesterday, the san bernardino police chief commented on another potential terror threat. let's take a listen to what he had to say. >> the gentleman that was described as appearing on the

middle eastern came up and spoke to the security guard around the time that the theater was closing, and he was asking about movies and times and things line that, but the security thought it was odd. so he notified our police department. >> that's monday night at a local movie theater. the police also said there's no reason to believe that there was a link to the san bernardino shootings, but look, it's kind of vague, the description and all that. they're certainly going to try to see, there were cars going by. they couldn't get license plates or even full descriptions of them. putting this together, it seems incredibly challenging. >> well, sure. but, you know, kudos to the security guard at -- you know, at the movie theater. we have talked about going back to the paris attacks talking about how this could potentia y potentially, you know, inspire a copycat or somebody that wants to steal the headlines from paris, and, you know, the saying if you see something, say something. that obviously resonated with this security guard.

kind of raised the hair on the back of his neck right to the point where he said, you know, this doesn't seem right. i'm going to let the police know. that was absolutely the right thing to do. >> jim cavanaugh who was on the broadcast earlier, he talked about the size, the cache of wh weap weapons, everything that was found. whether or not this was triggered by just being a workplace anger -- i mean, the trigger for this incident. does it seem possible that something, a larger plan may have been disrupted and they may have gone too soon? despite all the horrible damage they had did? >> i think anything is possible at this point. but if you look at everything layered one on top of the other, the fact that destroying the digital evidence, the -- you know, the cell phones right at the scene. a rental car. you know, all of these things seem to me -- and then just the vast amount of explosives and weapons, this was part of a

premeditated plan possibly and maybe likely there were other targets as well. but i don't think this really has that workplace violence element to it, you know, like when a person gets angry and comes back -- and i think this is a bit more planned and premed fa tated. the key is to see was there anybody else knowledgeable on what they'd do. and that's what the fbi is looking at, birds of feather, find out if there are others in the network. we'll see. >> don, thank you. no one is quite sure how to deal with it and we'll talk about it next. ♪ (vo) some call it giving back. we call it share the love. during our share the love event, get a new subaru,

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if you're the band europe, you love a final countdown. it's what you do. if you want to save fifteen percent or more on car insurance, you switch to geico. it's what you do. what exactly motivated the san bernardino attack may ultimately be found by high-tech investigators using computer forensics, but as tom costello reports the use of social media by suspect poses a major challenge. >> reporter: it is a top

priority for federal investigators, finding then scrubbing all of the electronic and social media communication that the san bernardino suspects may have utilized. >> we are going through a very large volume of electronic evidence. this is electronic evidence that these killers tried to destroy and tried to conceal from us. >> reporter: suspect tashfeen malik used a private facebook message to pledge allegiance to isis, but it's likely no one noticed because it was private. isis has become fluent in social media. in just one day last year, it posted 40,000 tweets. posting of the brutality. and recruiting new members. through an exploding digital community that offers secret communications with the ability to permanently delete. >> technology moves much faster than law enforcement so we have countless applications being created on a regular basis. all of them more -- more conducive to being secretive. >> reporter: in san bernardino the fbi will look for anything

that might tip them off to future attacks overseas or at home. >> allowing them in the future also to be able to look for certain motives or certain key indicators that may be able to prevent this or be able to be spotted online before it happens. >> reporter: twitter and facebook promised to remove any support for terrorism, but often it's too late. by the time facebook noticed malik's support for isis the attacks were under way. tom costello, nbc news, washington. and with me in the studio is senior editor of senior and digital media content. if the attacks turn out to be isis inspired does that only add more fuel to the terror propaganda? >> absolutely. that would be beyond their wildest dreams. they have two people who build bombs silently with great operational security, know hough to burn and destroy cell phones, during the attack. if isis didn't direct this, which there's absolutely no evidence they didn't, in fact we

heard the fbi say it was a one way very minor communication thing, this would be a huge victory for them. they have to sit there on keyboards around the world, put this hatred out and people are going to follow it. >> we talked about tom costello's case in which it was indicated that the isis pledge of allegiance, it was privately posted. what kind of a challenge does that pose for anybody? >> it's a huge challenge. you heard that in the package some of the apps, some of the avenues, they'll automatically delete itself 10 or 15 seconds later. that's hard for the investigators when they try to uncover the messages. >> what do you think is the hardest part going forward? you heard don borelli earlier and he was talking about the sheer volume of what investigators have. is that really the hardest part of this? >> i think that's probably right, that the hardest part is just the simple noise that is

being flooded out there, which isis is very good at. very media savvy about. but again, beyond lone wolf attacks now, these are two people if they were inspired by isis, they did so without te of the neighbors knew, local police had no heads up. it doesn't seem like they went to gun stores and actually bought the gun. >> the guns were bought in 2011 and 2012. >> it's all happening within the system. and some of it is happening online. in a moment a call to arms, why a county sheriff tells gun owners to be ready.

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the acknowledgement of the attack coming during an online

radio broadcast. there's no evidence that isis knew or directed the act. to the after math of the san diego massacre when upstate new york sheriffs are urging licensed gun owners should stay armed the in public the to protect themselves and others should an attack occur. >> there are still a lot of questions about motivation in the massacre, but the fact that this is being looked at as terrorism has changed the conversation for people. not that there's going to be another attack, but muslims are concerned about backlash against them. >> a sheriff has a strong message for gun owners. >> if they're comfortable with carrying a weapon, and they're proficient at it and they' shoud carry it.

>> reporter: the post drew mixed reaction. >> i'm getting e-mails that i can't keep up with. the majority are in agreement with me, but i am getting some pretty nasty e-mails. >> new york's police commissioner is among those who spoke out. >> i firmly believe h that if you have a weapon, it might change things. >> reporter: meanwhile across the country today, many muslim americans fear an escalation the in violence could be misplaced, especially after headlines like this one in the "new york post" this week. as to the islam eck center in riverside, california, in a mosque where syed farook worshipped, there are people worried about an attack. in silver spring, maryland friday night, there were prayers for the victims and peace.

while new york's mayor stood side by side on friday with a message for the city's 800,000 muslims. >> our muslim brothers and sisters contribute so much and to the government should support that by ever strengthening to the bond. >> reporter: the muslim community being very vocal condemning these two shooters and the attacks, but some mosques across the country security has been stepped up. even before the shootings in san bernardino, americans desire to own a begin is -- 2.2 million background checks in november. that is an all-time high. gun back ground checks don't necessarily mean an actual purchase occurred. that wraps up this hour, but next chris jansing reports from

san bernardino, where she's going to bring us an interview with the sis is ter of syed farook. most weekends only last a couple of days. some last a lifetime. hampton. we go together. always get the lowest price, only when you book direct at hampton.com

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good morning, i'm chris jansing in san bernardino, california where it is 5:00 p.m. we have reports that isis on its official radiation says the shooters here were two of its followers. and americans are waking up with a look at the woman who with her husband -- exactly who she is and the extent of her role in the attacks, to the fbi is now in charge of this investigation and is now looking into it as an act of terrorism. the "new york times" running an editorial in favor of gun reform on its front page