COLUMBUS, Ohio Police say a man has stabbed four people at an Ohio office building and has been shot by a police officer as he left the building.

Columbus police spokesman Sgt. Rich Weiner says three victims are in critical condition, while the fourth has minor injuries.

The attack was reported Wednesday at a building that houses offices of the Ohio attorney general.

Weiner says police don't know what prompted the attack or whether there's any connection between the suspect and the wounded.

The suspect is in critical condition. His name hasn't been released.