Afghan police clashed with Taliban fighters outside the capital Kabul, leaving a dozen militants and an officer dead, while four more policemen were killed in a bomb blast, the government said Tuesday. The militants were killed in a sweep to clear Taliban from Musayi district about 15 kilometres (nine miles) south of Kabul on Monday, interior ministry spokesman Zemarai Bashary told a foreign news agency. "The head of the district criminal investigation department was wounded and later died in hospital. Twelve enemies were also killed," Bashary said. The fresh violence was linked to a deadly insurgency led by the extremist Taliban, who are battling to wrest back power after being ousted from government by the 2001 US-led invasion.