Akbari told IRNA while ago that another terrorist was injured.
The clashes lasted for four hours, he added.
The official said identity of the terrorists is not yet well known and related officials will soon unveil details.
EghtesadOnline: Head of the governorate office in Salas Babajani city, Ali-Akbar Akbari, said 12 anti-revolutionaries and terrorists were killed in clashes with their comrades in the city in northwestern part of western Kermanshah Province on Tuesday.