Police officer kills four colleagues in Brazil

A Brazilian police officer has shot and killed four colleagues at their station.

The incident occurred early Sunday morning at a Civil Police station in the city of Camocim, in the northeastern state of Ceara.

The suspect shooter, who was off duty at the time, fled in a police vehicle and later surrendered at a Military Police station, a local security official told the G1 news outlet.

The situation -- including any potential motive -- remains under investigation. The mayor of Camocim -- which is approximately 350 kilometers (220 miles) from the state capital of Fortaleza -- declared three days of mourning in remembrance of the victims.