>> radicalized online. not through communication, but radicalized simply by watching videos? >> by watching videos. obviously we know that tamerlan spent time abroad in chechnya where there is a big islamic ideology in dealing with the fight against russia, the war with russia. but from what we know they were radicalized here at home, from these videos, and again, you know, this is all this initial, the investigation is just days old. they were just picked up on friday. dzhokhar was picked up on friday. everything still needs to be checked out. >> we don't know how much of this communication was verbal or written or just nodding. >> right. >> the other thing, do we know if this information was conveyed before or after he was given his miranda rights? >> we don't know as of yet. he has been read his miranda rights. but we don't know if this information came before or after. as you know there was a public safety exemption before he was read his miranda rights. so there was time when law enforcement had the opportunity to talk to him before he had