These are pictures of Sunil Tripathi, some are suggesting he's one of the bombers. If you see him call the FBI. twitter.com/JonahLupton/st — Jonah Lupton (@JonahLupton) April 19, 2013
Tripathi resembles #2, but Tripathi is described as 6’2, and #2 looks shorter than that. UNLESS #1 is 6’5 or more. I think the man who killed the MIT cop was described as very tall.