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But we -- chaos of the courthouse in Boston today out about a mile from here after reports spread that investigators had arrested a suspect and was bringing him there.
Although law enforcement officials later denying reports of an arrest those denials came.
After a crush of media descended on the courthouse looking for any glimpse of a possible suspect.
Everyone on high alert there as you can imagine this is where a suspect might go if the feds had made an arrest then word.
Bubba bomb threat inside.
Inside the courthouse forcing workers to leave that.
They said it was a code red in the media was forced to step back we're told that ultimately turned -- -- a false alarm.
And you can see workers pushing Cribbs down the street possibly from the daycare center inside that courthouse in Boston.
Top investigators say they have received promising intelligence.
From the photos in the video taken before the twin bombings that's what a congressional source is telling Fox News tonight.
Catherine hill live -- -- part of the story in Washington but what do we know about any possible leads on this Catherine you.
Well thank you bill congressional sources telling Fox News at the FBI did not brief the full House Intelligence Committee is expected.
Setting a highly -- investigation but the National Counterterrorism Center or NC TC.
The group that was set up after 9/11 to assess threats and share the findings -- -- handful of lawmakers that videos and photos leading up to the moment.
Are already providing quote promising intelligence on the case according to an investigative source one of the working theories.
Is that the device using low explosives was probably put together fairly close to the blast site itself.
Today the Wall Street Journal and others reporting that the FBI and Boston Police are canvassing hotels and short term rentals in the area bill.
Investigators also taking a close look at the components.
Of those explosives right Catherine.
We'll Fox -- -- told bomb components are now at the FBI crime lab in Quantico Virginia where they are being analyzed and that the circuit board was recovered.
Key components described -- is relatively intact which seems to bode well for investigators.
This law enforcement bulletin obtained by fox from FBI and Homeland Security.
Sent to law enforcement confirming one bomb was a pressure -- who was shrapnel including nails -- eighties and ball bearings.
The second device is so badly damaged it is only described simply as a metal container.
In both devices the bulletin says the type of low explosive and noted detonation are actively being determined.
The manufacture of this battery says it's very common founding kids radio controlled toys and they still tens of thousands of these batteries every year.
The threat of an improvised explosive device here in the US is unfortunately not new and while the attacks are typically associated overseas.
It's something that is well understood here.
You know I think the general message.
Tired and I've gotten coverage people who are working this is -- have my own experience is that we've anticipated -- -- happened we've worked hard.
To prevent it from happening but you can't be 100% successful.
That the key here is to be quick and diligent in the investigation.
But -- to be resilient.
Fox is asked the FBI comment on the status of the bomb analysis but there was no immediate response now.
Catherine thank you from Washington tonight to our viewers at home we expect.
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