Four oil tankers were mysteriously caught fire and turned to ashes in Khinjan district of Baghlan province 150 km north of Kabul Saturday night, a local official said on Sunday. Habibullah, the police chief of Khinjan district, blamed the carelessness of drivers for the incident. \"The drivers were cooking next to an oil tanker. Suddenly it sparked flame and destroyed three oil tankers around,\" Habibullah told newsmen at the site of the event. Some shops nearby were also damaged, he added.