Photo taken with a mobile phone shows an ambulance arriving at the accident site in Zhob, Pakistan's southwest province of Balochistan, Dec. 13, 2019. At least 15 people were killed and one other was injured when fire engulfed a passenger bus following its head-on collision with a van in Zhob district of Pakistan's southwestern Balochistan province on Friday, a local official said. (Str/Xinhua)