NO We now know the two young men acted alone.
No! Apparently it was two guys from Chechnya who claim to be Muslims but are not really. A true Muslim doesn't fuel the spread of Islamaphobia by carrying out these sort of attacks in an already Islamaphobic country like America nor cause death to innocent people such as those marathon runners who came from many different countries.
No because they would have claim responsibility. The guys are Russians
Then do your own homework. And for crying out loud, at least learn to spell "Boston" properly.
doing project
