Some unidentified militants set ablaze on Sunday at least three NATO oil tankers by opening fire in western province of Balochistan, local media reported.
According to reports, terrorists attacked tankers carrying oil supplies for NATO troops stationed in Afghanistan in Dasht area of Mastung district of the province, IRNA reported.
The gunmen were safely managed to escape from the spot after attack.
The sources said that levies forces rushed to the spot and cordoned off the area and launched a search operation in the area. No causalities were reported initially, the sources said.
No group has claimed responsibility for the attack.
Militants often attack trucks carrying supplies for US and NATO troops in Afghanistan. The supplies arrive in Pakistan's port city of Karachi and travel to Afghanistan.