It was the FBI, all the police departments up in MA, with the public that did their work, NOT Obama, just to correct you.
Actually, the cable TV stations are dwiving me nutz. They know half of what has been posted here on FR for the last 5 plus hours. They claim they don’t know the names of the perps, or anything about them (we do). Either they are playing dumb, are dumb (most likely), or have been asked not to name names (don’t know why, as the perps names are all over the internet and have been for the last few hours or so. Geez, we at FR are 10 times more informed about the details of last nite/today than the cable programs, including Fox (which is always behind the times when it comes to breaking news anyway).