tdwp wrote:
Probably a stretch, but this guy is wanted by the FBI for 2 nail laced bombs that went off in California. He was last seen in western Massachusetts.
He's an environmentalist & animal rights person. Not sure what a motive would be for the marathon?
http://www.fbi.gov/wanted/wanted_terrorists/daniel-andreas-san-diegohttp://en.wikipedia.org/wiki/Daniel_Andreas_San_Diego
Daniel has the same frown as black hat guy in the walking away from blast street photo.
Daniel would be ten years older than the FBI photos. It's a possibility it's him IMO.