A Brooklyn man with a history of emotional problems was arraigned Sunday on on a charge of second degree murder after police say he stabbed his mother to death the previous night.

The Brooklyn District Attorney's office says Richard Cohen, 31, did not enter a plea.

Police say Cohen called 911 after he allegedly stabbed his mother at 1220 Ocean Avenue in Flatbush just before 11 p.m. Saturday.

Authorities arrived at the scene and found Anne Cohen, 64, stabbed multiple times in the torso.

She was pronounced dead at Community Hospital.

Her neighbors remembered Anne Cohen as a quiet woman who kept to herself.

"Go to the store, get her groceries, go home. Her husband died years back, heart attack. Never bothered anybody," a neighbor said.

Cohen remains behind bars without bail.