TODAY   |  April 19, 2013

Bombing suspects ‘may have accomplices’

NBC News’ Pete Williams shares the latest information about the two men suspected in the Boston Marathon bombings, brothers who are reportedly Chechen with some foreign military service experience. One suspect has been killed and one, Dzhokhar Tsarnaev, is still at large. Police are also searching for possible accomplices.

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This content comes from Closed Captioning that was broadcast along with this program.

>> pete williams who has the latest on the suspects and the investigation. pete, good morning again to you.

>> reporter: good morning, savann savannah. we've been told the names of these told. we're told that they're brothers. they've been in the united states for at least a year. one of them was living in the cambridge area. we're told that the man with the white hat , the one on the left, the one who is still at large, the one who is the reason for all of this police activity and this extraordinary lockdown in boston and the suburbs is 19 year old tsarnaev. he has a massachusetts driver's license. is a resident of cambridge. we don't know the first name of his brother. they obviously came here many months ago, at least a year ago. the other thing is it bears repeating, savannah, that all this started thursday night not because the fbi was moving into arrest them. there was no tactical operation planned. five hours after the fbi showed their pictures. they were not about to arrest them. five hours after the pictures became public, they apparently decided to make a run for it and that's when all of these events began to unfold with the robbery of the 7-eleven and shooting of a campus policeman and all of these other activities that led us to where we are now. it's been quite clear to authorities that they have been in the u.s. for some time. we're told they have some foreign military experience. we believe that they were coming here from overseas because earlier this morning the boston police commissioner said the one who is still at large, we believe this to be a terrorist. we believe this to be a man who has come here to kill people, savannah.

>> pete williams with the latest on the suspects. thank you