Taliban fighters overran a police checkpoint in northern Afghanistan and beheaded six police officers, while a NATO soldier and eight militants were killed in separate incidents, NATO and Afghan officials said today, dpa reported. "During the attack, insurgents overran a police checkpoint and killed the police officers by cutting off their heads," a statement by the NATO-led International Security Assistance Force (ISAF) said. The Afghan police "successfully repelled" Tuesday's attack on the police headquarters of Dana-e-Ghori, a district in Baghlan province, it added. In the neighbouring province of Kunduz, Afghan and ISAF forces killed eight militants and injured four others late Tuesday, the province's Governor Mohammad Omar said. No Afghan or NATO soldiers were hurt during the operation in the Chardarah district of the province, he added. In another incident, a NATO soldier was killed by a roadside bomb in southern Afghanistan Wednesday, the ISAF said in a statement, without providing further details. Meanwhile, the intelligence service said Wednesday that their forces arrested ten militants in Kabul just two days before the international conference on Afghanistan was held on Tuesday. -- SPA