"We have identified the armed group. The police have checked the scene and investigated the case," Amar said here on Sunday.
According to Amar, the perpetrators owned firearms and presumed to be involved in several acts of terror.
The police have got data of the perpetrators and discovered that they are hiding in hilly areas around Mile 60 and Mile 68 and at Kali Kabur region.
The police will conduct further investigation relating to the detention of perpetrators, Amar said.
He added the vehicles of PT Freeport Indonesia can operate normally in the area of the scene.
The shooting incident which occurred at Mile 60 area on last Thursday has caused damage in a car belongs to PTFI and also injured a personnel of Mobile Brigade unit. (*)