A Weymouth, MA, police officer and a bystander were shot to death Sunday morning by a suspect who attacked the officer and grabbed his duty gun, officials said.
Officer Michael Chesna, 42, was killed when a suspect identified as Emanuel Lopes, 20, struck Chesna in the head with a large rock, took his gun and then shot Chesna in the head and chest, the Norfolk District Attorney's Office told the Weymouth Patch .









