done by foreign or domestic or a individual lone act. lon woefuls and affiliated groups are certainly determined to attack. with the analysis by the f.b.i. crime line in virginia ongoing. head of the security committee told fox news new leads are expected soon. there are tracers in the gun powder and the pellets themselves and ball bearings can be traced to a manufacturer and the device itself it is the best evidence that we have. in addition to still images and video. a source tells fox news that there is a significant social media foot print. more than 30,000 social media messages were connected from 25 hours before to 24 hours after the explosion. messages that seemed out of place and quoded and tweets
from eric holder on capitol hill. this will be his first public testimony since the deadly boston bombings, meanwhile next guest tells fox news some of the forensic information from the scene of those bombings could be in washington by today. here is that picture we showed you earlier of the site the lord and taylor surveillance camera, police had been looking at some of that tape and where the second bomb went off. republican congressman michael mccall of texas is chairman of the house homeland security commit. mr. chairman, thank you so much for being here. thanks for having me. megyn: i want to start with that information that had you said some of the forensic information should come back today and they may have some of the signatures from the equipment. can you clarify what that means? well possibly as early as today it s down at quantico being examined for forensics. there are tracers in the gunpowder, the pellets themselves, the ball bearings can be traced to the manufactur
looks like and do tracers on the powder and there are typically chemicals in the powder that link to a manufacturer and always usually find a serial number. but the battery is an interesting element. it came from a radio controlled toy or something that you would see with a child. so rather than go to the store and buy a power source. they bought an item and took it out and put it in the device. we spoke with the member of the joint task force. under pressure when you build a device. you resort to what you know best would be the training to make an ied. they were trained to buy a toy that had a battery and remove it and possibly with the wires and circuit board. that is a tile of bomb training that you find in certain groups. bret: it is important to
on the other hand, they re going to have the best evidence right now in my judgment are these videos that were taken from security cameras outside lord & taylors, that the fbi is poring through, my guess is they have possible suspects they have seen on this videotape that they re looking at and at some point in time will come back to the public to help their cooperation to track them down. that coupled with the device itself and the forensics, the fbi, what the fbi does at best is its forensics of bombing devices. they re very, very good at tracers, fingerprints, footprints on these devices to find out where it was purchased and who purchased the materials. so from there, they would execute search warrants and hopefully find the terrorists. and chairman, let me just interrupt here, we do have some breaking news.
and we re talking about finding other signs of live and other test down things like ice. and there is something like as you were saying would be very significant. and it may be in the fewer tour if the planet heats up possibility there would be live again? this is probably like life on earth. this may be surviving there, today. and so this rover has a small drill and can find tracers of live f we find conditions were live that would indicate need