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Well this is a Fox News alert the search is in testifying.
For whoever was behind.
The Boston bombings there is chilling footage from the scene as the panic in the chaos.
Occurred seconds after that first bomb went off.
According to senior officials so far no one's claim responsibility.
But they're not ruling out overseas involvement and our chief intelligence correspondent Catherine Herridge is joining me now live from Washington Catherine what are you hearing.
Is the latest.
-- UN the latest developments is that we were anticipating a briefed on Capitol Hill closed door briefing.
From the NC TC this is -- the National Counterterrorism Center this is the group that was set up after 9/11.
To assess the threats and to monitor the threats against the United States and to break and that's -- piping.
That led to 9/11 -- been given no explanation at this time for why it was abruptly canceled.
Also at the news conference a short time ago in Boston they would neither confirm nor deny they had -- in custody or whether there were people of interest in the -- -- their running down.
Fox News is told from federal sources that there is one person of interest this is a Saudi national.
The date of birth is 31293.
And that they were here on a student piece of this information was circulated -- Capitol Hill last evening.
Fox is also told -- that there were no hits on the terrorism watch list for this individual but that immigration customs enforcement that's a division of Homeland Security.
Is actively running down whether he was in compliance with his -- student visa in this country so another words.
Whether he was actually enrolled -- whether he was taking courses or whether he'd had any derogatory information.
Or any run ins with the -- this is just described to us as a person of interest not a suspect.
And it's one of multiple leads that's being run down separately -- Saudi source did tell us -- individual.
Is believed to be from a prominent Saudi family and that this particular tribe is down inside Saudi along the Yemeni border.
This was -- in the same the apartment that was raided it last night into the early morning hours of today.
In Revere Massachusetts so this is all connected to this one individual change.
Catherine do we know anything yet about the devices is there any signature because we learned -- the Mass.
General press conference.
That the victims at the hospital had a combination of metal fragments from power -- we heard -- something like nails.
What are you learning.
And will Fox News first reported last evening that there was evidence in the devices of shrapnel specifically.
Ball bearings in that came from the head of Homeland Security -- committee.
Republican -- Michael call.
That news conference we just had in Boston -- more confirmatory evidence that there was shrapnel and the devices the doctor saying -- nails and also ball bearings and as you indicated.
Because of the amount of shrapnel -- in the victims in some cases up to forty pieces of shrapnel this would not be environmental -- more evidence.
That the devices were designed to to maximize casualties.
A former senior FBI agent.
Told Fox News that when you look at the video of the explosions they -- got that video here and you see that sort of white.
Vertical smoke this is not inconsistent.
With an explosion involving TA TPT ATP.
Is a chemical explosion type of explosive device or an exclusive rather.
That you can put together going to.
Home hardware store or even at your supermarket.
This kind of explosion has that vertical hook hook the white -- it does not have that.
Rolling orange glow of the traditional device.
I traditional explosive device and this is the kind of material that is often used in -- -- now on that point.
Fox News obtained a bulletin that was sent out from Homeland Security the FBI that's pretty standard after -- major event -- goes -- to law enforcement.
Locally also states in central level.
And it talks that Boston is highlighting the risk by ED's it -- several examples that it points to all of them I will add.
Point two overseas terrorist organizations but the bulletin not -- does not draw any conclusions based on what we've seen in Boston so far -- Still so early in the investigation I know you -- your sources overnight -- my Homeland Security sources told me many counterterrorism forces.
Monitor those hardware stores and they are did get reports on what has been -- much more to come on this.
Very clearly early in the investigation -- we will check back with you bill as you --
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