More: Boston bombers: FBI hunting 12-strong terrorist ?sleeper cell? linked to brothers Tamerlan and Dzhokhar Tsarnaev - Mirror Online
"They were too advanced. Someone gave the brothers the skills and it is now our job to find out just who they were. Agents think the sleeper cell has up to a dozen members and has been waiting several years for their day to come.”
My sense is this thread has reached the end of its life cycle. Therefore, I am closing! The citizens of Boston and surrounding area need time to heal. Lets help them move to closure.