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-- -- -- Or earlier today hospital officials confirm that the explosive devices detonated contained metal fragments we talked about that a bit earlier Trace Gallagher has more on that -- -- Today things.
-- about and go back -- just kind of expound on the breaking news the Bill -- brought us about those pressure -- the top of the hour -- more reporting wonderful reporting by Jennifer Griffin and Catherine -- got to give it is more detail.
About these for the six -- pressure -- they believe might be behind this.
The coverage apparently -- again.
A backpack and in those back taxes all school board in the -- may or may not have been attached to the board and outside the board.
There may have been a jar of -- and dvds and pellets inside jar.
The unclear thing about this -- -- is what the explosive was inside.
A bad -- -- there's some speculation the explosive whatever it was may not have been tipped down very.
Tightly and that may have led to the explosion going -- -- instead of upward we can also point out that back in May of 2010 that was attempted attack.
On Times Square and they found about a 130.
Inside a pressure cooker and you mentioned in the top of the hour -- name not sir Bob Dole was arrested in Killeen Texas.
He was believed to have been wanting to bomb some restaurants where soldiers at Fort Hood frequent did.
And he too was found with two pressure -- now again we do not know what the explosive material was inside these but the very.
-- improvised -- it improvised explosive device means he's homemade bombs are built was really.
Whatever you have on hand the error yet you said earlier -- and Boston was swept for explosives a couple of times but as experts point out detecting explosives often very difficult especially if -- in liquid form that can be mixed up at the scene that's the reason that airplanes will not let people on board with more than three ounces of -- because.
The more you have the more you can mix up.
What -- the device was pressure cooker or not whatever it was detonated web.
Experts say these -- always leave a very distinct signature listen.
If -- something built from not from items chemicals that are underneath your kitchen sink.
That's a whole different -- so the explosive is gonna set the signature more than anything else but still it's this the type of components ever use that may give us a general.
Idea of who may be responsible as seconds compared to two previous events.
And now of course it's up to investigators -- -- piece all this together and find out what the trigger was and exactly what the IED was made up.
They have much more on that just a bit -- thank you.
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