The group, which the Indonesian government calls "a criminal armed group KKB" separately launched attacks at four sites in the district, Provincial Police Spokesperson Ahmad Mustafa Kamal said.

One of the attacks was an ambush of a truck carrying civilians, held by 20 members of the group armed with three long rifle guns and one pistol, he said.

"When the truck was stopping, it was shot (several times) from a distance of 50 meters," the spokesperson told Xinhua via phone.

The bodies were recovered and injured persons found at the ambush spot and three other sites of the attacks, according to him

"Totally, 10 people were killed, and two others suffered from injuries. They all are civilians," he said.

(With UNI Inputs)