Afghan policemen gather at the site of a suicide bombing attack on the police headquarters in Gardez. Pic/AFP

Six Afghan police and six militants were killed after Taliban attacked a police headquarters in Gardez city, capital of eastern province of Paktia on Sunday, the provincial police chief said. The attack started after a terrorist rammed a truck bomb into front gate of Afghan National Police (ANP) 303 Spin Zar Police Zone at 6.15 a.m., Gen. Tooryalai Abadyani told reporters, Xinhua reported.