Seven Taliban militants were killed after an unmanned plane of the NATO-led coalition forces struck a vehicle in Afghanistan's Kunduz province, an official said on Tuesday."Based on a tip-off, a coalition forces' drone carried out an air raid against a vehicle running in Nah-r-Sufi locality of Chahar Dara district on Monday night. The air strike left seven militants killed and two other militants injured," district Governor Zulmai Farooqi told Xinhua.In another development, a Taliban military chief named Abdul Jabar Mardan for the neighbouring Baghan province was killed during a special operation conducted by Afghan forces on Monday evening, an official told Xinhua earlier on Tuesday.