Gunmen, dressed in Police uniforms, have stormed Badaber Air Force Base in Pakistan, killing at least 17 people.
Sixteen of the victims killed were saying their morning prayers at a mosque inside the base, the other victim killed was an Army officer.
Pakistani Taliban have claimed responsibility for the attack.
Major General Asim Bajwa revealed that the militants entered the base at two points before splitting into groups.
Although the total number of gunmen involved is unclear, 13 of them have been killed by security forces, although the Taliban said just one of their fighters died.