Massachusetts Officer Shot, Killed with Own Gun

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 .

Lopes also allegedly fired more shots as he fled from police. One of those rounds reportedly entered a home and killed a woman.

Lopes was shot by police in the leg and apprehended.

Chesna was responding to a report of an erratic driver.

Lopes was previously arrested in October and charged with distribute cocaine to a minor, possession to distribute cocaine and resisting arrest, the Patriot Ledger reports.

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.