Detailed text transcripts for TV channel - MSNBC - 20130423:19:02:00
Michael, what more have we learn about this lone wolf claim? >> reporter: well, this is looking more and more to bureau officials like a case of self-radicalization. as we've reported, dzhokhar tsarnaev said he and his brother acted alone. they were motivated by a desire to defend islam. and as a result of u.s. wars in iraq and afghanistan, that they learned to make the bomb from online versions of inspire magazine, put out by al qaeda in yemen. perhaps most significantly, at the moment, a preliminary review of the computer and cell phones that they used have shown no indicators of outside acc...