Unknown militants torched a NATO oil tanker after opening fire at it on Friday morning in Pakistan's southwestern Balochistan province, local sources said.

Some gunmen, armed with automatic weapons, ambushed a NATO oil tanker in Khuzdar district of the province. The driver and co-driver of the vehicle escaped the firing luckily but militants approached the container and torched it before running away.

Hundreds of containers travel with NATO supplies on a road from Pakistan's southern coastal city Karachi to Chaman border between Pakistan and Afghanistan in Balochistan. Attacks on NATO containers seem a routine matter now by militants as hundreds of NATO vehicles had been attacked in the last few months.