Police found justified in killing of knife-wielding man By DAVE COLLINSDecember 18, 2020 GMT HARTFORD, Conn. (AP) — A Connecticut police officer who shot a knife-wielding man to death in January was justified in using deadly force, but police agencies should take steps to improve how they deal with mentally ill people, a prosecutor said in a report released Friday. Ansonia police Officer Brendon Nelson opened fire on 30-year-old Michael Gregory in the apartment of Gregory’s girlfriend on Jan. 2. At the time, Gregory was charging with a knife at three officers after they had repeatedly ordered him to drop the knife and Nelson had tried to subdue him with a stun gun, which had no effect. The events were recorded by officers’ body cameras .