I do so hope they manage to get to the bottom of how and why he and his brother decided to do this. It's important for future security and would help in identifying other potentially dangerous young terrorists-in-the-making. The more info is gleaned from him, the easier it will be to spot the same type before (God forbid) any more atrocities are perpetrated. Somehow, somewhere, impressionable young people are being brainwashed into doing this. We must find out as much as possible.