Boston Bombing Suspect Lived Ordinary Life in Cambridge, Mass.

High School classmates portray marathon bombing suspect Dzhokhar Tsarnaev as studious, athletic.
2:33 | 04/19/13

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Transcript for Boston Bombing Suspect Lived Ordinary Life in Cambridge, Mass.
There's the suspect showed -- and I -- page nineteen of Cambridge mass went to -- Latin high school wrestler -- -- high school. We just spoke a few minutes ago with a classmate of his -- -- said he was you know good athlete. Fit -- well funny popular took an acting class. With -- -- -- ABC's Pierre Thomas right now that at odds with what we heard about what he and his brother did last night -- Exactly George and one of the things it's really key right now the fact that these are longstanding. Members of that greater community. Tells you why releasing those photographs put so much pressure on them. One law enforcement official said. When you are known to the community like this you know -- people are going to know who you are so that is perhaps why they tried to rob that 7-Eleven last night. And why they ran aground basically and you -- you. Talking all morning long about this fear that there would be kind of sleeper cells here in the united think people here for some time would then be. Activated but hey does this feel like that -- -- from what we're learning from Sierra -- just moments ago about. Was -- I was like at least in high school up until 2011 seemed the most normal American life possible. When -- we do -- we don't yet know but one of the protocols. A sleeper cells would be to appear normal to blended. But -- also one of things they also have to look at is the possibility that these men may have been radicalized on the Internet that has been a great concern as well. But I can tell you the fact that they would -- -- would be seen in appear normal not fit any particular stereotype. Law enforcement officials said that is the thing that they've been concerned about because you wouldn't have any hint what would -- and in -- -- But important what I want to press that a little we talk about being inspired by the unit that is something we've seen more in the last several years as the leadership. -- al-Qaeda and other terrorist groups has been dismantled you see more acts by. Groups who may not have direct connections. Overseas but certainly are inspired what they see why what they read. Absolutely George the Justice Department is brought over fifty cases. In the last several years involving people who -- often were inspired by the Internet. You remember the radical cleric Anwar -- locking his name came up time after time after time. And many of these cases he was the cleric. Who they think. Facilitated the attack in Fort Hood we knew that the suspect in that case had been communicating with him. And so law enforcement officials say the Internet has been a big -- boon to this kind of terrorism.

This transcript has been automatically generated and may not be 100% accurate.

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