Rochester Police said an officer shot and killed a man Wednesday morning as they say he moved toward police while armed with a "large knife."

The incident happened on West Main Street, right by the Open Door Mission.

Rochester Police Captain Mark Mura said officers were called to the Mission just before 3 a.m. for a call of a man armed with the knife. Mura said the man had grabbed the knife from inside the mission but had left the building by the time officers got there. Officers quickly found him. Mura said the man was cutting himself with the knife and making threats to kill officers.

Police traveled onto Cascade Drive then Main Street walking, trying to talk the man down; but in front of Open Door Mission, security video and body camera video then shows him suddenly charging at police with the knife, and one of them shooting about five times.

Police requested an officer with a taser, but Mura said the man "moved forward" at police with the knife when he says an officer shot the man at least one time in the upper body.

Sister Kelly Diranco volunteers at the Mission. She says it started after the man violated one of their policies.

"He was told to leave immediately. He had broken out into violent behavior and had threatened to harm, and once he was outside he had a knife on him," Diranco said.

The Monroe County District Attorney's Office and the New York Attorney General's Office have been looking into the case. Officials say unlike other recent high-profile cases, this one does not go directly to the AG because it involved an armed suspect.

City officials said the police involved have been put on administrative leave while the case is investigated.