Timika – An unidentified group of people shot Sunday a security car of PT Freeport Indonesia, the giant gold and copper mine, in the country's easternmost province, a police officer said.

Director of the crime unit of the Papuan Police Sr. Comr. Paulus Waterpauw said that the police had opened an investigation into the incident in which bullets hit the left side of the car and the car's rear window. The incident took place in the wee hours of Sunday morning.

No one was injured in the incident, Waterpauw said, adding that seven bullet casings were found at the scene, along with several footprints. "The motive for the shots remains unknown," Waterpauw said.

The police had questioned a security guard who at the time of the incident was on duty at Terowongan Post, about 200 meters from the incident site. Waterpauw believed the shooting was intended mainly to destabilize security in the area.

He also denied speculation that the shooting was linked to the attacks Saturday by angry protesters at Mimika Legislative Council building. During Saturday's attacks, protesters demanded that the police settle fresh fighting between two warring tribes in Timika.