Utter Bafflement News Today

Mike, as the investigations continue both here and oversea, we understand that investigators are confident these brothers acted alone. even as their family members express utter bafflement. what are we learning about the larger case against these suspects? >> reporter: well first of all, this is looking, martin, more and more like a case of self-radicalization. now, nothing is conclusive and, you know, were far from the end of this investigation right now. >> of course. of course. >> reporter: b...