BOSTON, July 11 (UPI) -- Convicted Boston Marathon bomber Dzhokhar Tsarnaev may face another murder trial for allegedly killing a police officer on the campus of Massachusetts Institute of Technology in the days that followed the attacks.
Middlesex District Attorney Marian T. Ryan said she plans to bring Tsarnaev to trial in the death of Sean Collier, 27, who was shot and killed on April 18, 2013. Prosecutors say Collier was killed by Tsarnaev and his brother, Tamerlan, during the manhunt for the bombers.