The FBI are said to be hunting a 12-strong terrorist “sleeper cell” linked to the Boston Marathon bomb brothers. Law enforcement believe Tamerlan and Dzhokhar Tsarnaev were specially trained to carry out the devastating attack and did not act alone. More than 1,000 FBI operatives are working to track down what they believe is a terrorist cell. Authorities have so far arrested a man and two women 60 miles from Boston in the hours before Dzhokhar’s dramatic capture on Friday.
A source close to the investigation said: “We have no doubt the brothers were not acting alone. The devices used to detonate the two bombs were highly sophisticated and not the kind of thing people learn from Google. 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.”
A specialist team of CIA and FBI interrogators remain at a Boston hospital to grill wounded Dzhokhar, 19, about the cell. Dzhokhar is badly wounded and is said to be handcuffed to his hospital bed under armed guard.
