investigators do their work and not jump to conclusions as the president said on friday. >> an fbi team is on the ground with carney, adding they're in the russian republic to interview the tsarnaev parents. they want to know where he went, who he met with and if he had bomb making training. the fbi has tamerlan's computer and they're scouring it for contacts, including those overseas. >> shepard: hey, it's my understanding there's a lot of new information about the components in the bombs. >> fox news learned a joint intelligence bulletin from the fbi and homeland security was sent to local, state and federal law enforcement to update them on the forensics of the bomb, concluding the boston bombs were not identical. one had shall nell and nails and the other had only anyways. there was variation -- nails.