We begin though with the breaking news and Jack Tapper. He is joining us right now, here in Boston.

What are you learning about what the suspect has been saying?

Well, according to one government official and this is preliminary investigation, but Dzhokhar Tsarnaev is saying the following to investigators. First of all, that were no foreign terrorist groups involved. This was two brothers acting on their own. Dzhokhar not surprisingly is saying that he was following his older brother Tamerlan, and that Tamerlan was the one who really was the driving force behind this. In addition, there is an indication from the interviews that the brothers were self-radicalized online. They were getting information from videos online, from YouTube videos online, but from communication, not from e-mail, the way the Fort Hood shooter was, but they were very much self-starters, self-radicalized. The older seems from preliminary investigations to have been motivated by jihadi, traditional jihadi motivations and the political religious implications that means the idea that Islamist under attack and that jihadi needs to fight back. So preliminary investigation now, this official cautions, this is just from preliminary interviews with this individuals with Dzhokhar Tsarnaev.

And the interviews have been limited fromVery limited and that everything needs check out. Investigators are gonna follow up. There are individuals who knew a lot of people and half a lot of connections. Now they weren't shut-ins who were on their own. These people knew a lot of people, so everything needs to follow up on. But this is what Dzhokhar Tsarnaev is saying in these initial preliminary investigations.

Fascinating, fascinating if what it is saying is true.

Many questions still remain about what his brother did for that six months period when he first flew to Moscow, then was in Dagestan, also believed to have visited Chechnya, the online component of his alleged radicalization is also interesting. The idea that this was sort of self-motivated from jihadist groups online. Yes. Quite frankly, it's not the first time and that's why these jihadi groups put videos online hoping that they will motivate individuals to watch the videos and become self-radicalized. The another question of course we don't know the question to what it is did he received any kind of bomb training oversea or again that his ability with these explosives was that something he learned from the Internet as well, and that's something the investigators ˇSomething that they're looking into. They don't know. It seems a little bit too, I mean, to me as a reporter, it seems a little bit too complicated and complex to just do it yourself, but the investigators are looking into it right now. I spoke to Bob Baer two hours ago, former CIA officer with extensive experience in the Middle East and also with explosives. He agreed with that. He said a lot of people, explosive experts he has talked to over the last several days also seem to think that a lot of this stuff is not stuff that you can just teach yourself on the Internet, though a lot of the information is out there, that you actually need somebody to kind of show you some of the tradecraft. Yes. The investigators and experts say things along the lines of these were crude bombs, these weren't complicated bombs and that is true within the gamut of bombs.

But to do what they did is not something that one could just pick up on the Internet and run off and do. It would take training and it would take practice. You are right.