COLUMBUS, Ohio (AP) — Police say a man stabbed four people in an attack that began near an Ohio technical school that's housed in a downtown office building. He was then shot by a police officer as he left the building.

Columbus police spokesman Sgt. Rich Weiner says the suspect confronted one victim inside the building near Miami-Jacobs Career College. He said other people inside intervened and took away one knife the suspect was using.

Weiner says those who intervened didn't realize suspect had a second knife.

Three male victims are in critical condition, while a fourth man has minor injuries. The suspect is in critical condition. His name hasn't been released.

A school spokesman says he doesn't know whether the victims were students or staff.