KABUL: Taliban fighters attacked a NATO convoy and killed three drivers before setting 13 fuel tankers ablaze in southeastern Afghanistan, an Afghan official said Friday. The attack happened Thursday night in Shahra Safa in Zabul province, said Muhammed Jan Rasolyar, the provincial governor's spokesman. Taliban spokesman Qari Yousef Ahmadi claimed responsibility. Insurgents have intensified attacks on NATO supply convoys in Afghanistan and neighboring Pakistan, where one of the alliance's vital supply lines begins. The violence recently resulted in the route's temporary closure. NATO helicopters pursuing militants mistakenly shot three Pakistani soldiers at a border post, prompting Pakistan to shut the supply route. It was reopened after American officials issued public apologies. In another border area, a roadside bomb killed a district chief and two colleagues traveling in Dur Baba, in eastern Nangarhar province near the Pakistani border, the Afghan government said. – Agence France