AlHijjah 7, 1433, Oct 23, 2012, SPA -- Six police officers, including two district chiefs, were killed in a Taliban ambush of an aid convoy in western Afghanistan, officials said Tuesday. The police were dispatched to help the convoy and were attacked by the militants Monday night in the Obe district of Herat province, dpa quoted provincial police spokesman Abdul Rauof Ahmadi as saying. Ahmadi did not name the relief organization. The district police chiefs killed were from the Obe and Chesht districts, the spokesman said. Several militants also died, including the commander of the Taliban group that carried out the ambush, said Sayed Abdul Ghaffar Sayedzada, Herat's police chief. No one claimed responsibility for the attack.