Taliban guerrillas killed four Afghan soldiers in an ambush in the restive southern province of Helmand where British troops have begun setting up bases as part of an expanded NATO deployment. The soldiers were killed during a patrol on Thursday night in Girishk district and the attackers fled after a brief clash, district police chief Khan Mohammad Khan said on Friday. "The soldiers were patrolling in vehicles when they were attacked," he said. "Four soldiers were killed and one wounded while one Taliban fighter was killed and five wounded." A Taliban spokesman, Qari Mohammad Yousuf, said Taliban fighters had killed 12 Afghan soldiers in the ambush.