ISLAMABAD - At least two people were injured and 20 NATO containers were destroyed late Sunday night in an attack by militants in Pakistan's southwestern province of Balochistan, local media reported.

According to the reports, the incident took place when drivers of 20 containers carrying oil and other products for NATO forces in Afghanistan parked their vehicles near a roadside restaurant for food and rest in the Hub District of Balochistan.

Around 10-15 militants riding on motorcycles reached the site and started spraying bullets at the containers before firing rockets at them, which caused huge fire in six containers that later covered all other vehicles parked nearby.

Earlier reports said that only half a dozen containers were torched, but later local media reported that 20 containers were destroyed in the attack.

At least one driver and a woman were severely burnt in the fire.

Police, security forces and rescue teams rushed to the site and shifted the injured to the hospital.

The attackers managed to escape from the site easily after the strike.

Fire brigade was also called from the Hub city and it succeeded to extinguish the fire after six hours.

The convoy of the NATO containers was heading towards Afghanistan from Pakistan's southern port city of Karachi.

Security forces launched a search operation in the area to arrest the assailants.

No group or militant organization has claimed responsibility for the attack yet.

Earlier on Friday, at least one person was killed and nine NATO containers were torched by unknown militants in the Sorab area of Khuzdar District of Balochistan.