Ten policemen were killed in three separate attacks in Afghanistan, officials said Wednesday. "A roadside bomb struck a national police convoy Wednesday morning around Kunduz city, in which two police were killed and three others were injured," a spokesman for the provincial governor Enayatullah Khaliq said. According to dpa, Kunduz city is the capital of the province of the same name in the north of the country. The Taliban claimed responsibility for the attack, saying they had killed seven police. Also, four police were killed in a mine blast in Helmand province in southern Afghanistan on Wednesday, according to an official. "Police were defusing a landmine laid by the Taliban in Musa Qala district when the mine went off, killing four of them," Dawood Ahmadi, spokesman for the provincial governor, said. In western Afghanistan, four policemen were killed in a Taliban ambush Tuesday night, officials said. "The incident took place in Herat province while police were patrolling Ghoryan district," police spokesman Noor Khan Nekzad said. He declined to say if the Taliban suffered casualties during the incident.