Russian witnesses in Tsarnayev case detained by FBI

US media report today that Russian witnesses in the case of Johar Tsarnaev have been held "under house arrest" in a hotel in Boston for several days. Their names and even how many of them there are is not revealed, the FBI monitors all their movements.

According to TASS, there are electronic bracelets on their feet. One witness was not able to leave the United States, as at Boston airport he openly declared that he was one of the members of an armed underground group in the North Caucasus.