DERA ISMAIL KHAN (Agencies) - A Taliban militant and his wife carried out a suicide bombing on a police station in Dera Ismail Khan on Saturday that killed 12 policemen, a Taliban spokesman said on Sunday. The pair entered the police station in Kolachi on Saturday and said they were there to lodge a complaint, said Imtiaz Shah, a senior police official. Once inside, the two attacked with grenades and machine guns, triggering a five-hour standoff with police. Both attackers, including the woman wearing burqa, eventually blew themselves up. They killed eight police officers and two civilians, said Mohammad Hussain, another police official. The Taliban rarely use women suicide bombers. The attack on the police station suggests they are adopting new tactics in a campaign to topple the government.