Suspected militants in Pakistan on Friday attacked trucks carrying fuel for international forces in Afghanistan, killing a driver and destroying nine oil tankers.

The attack, in the south-western province of Balochistan, was the first on NATO trucks in around two months and has sparked fears that Islamist militants might be targeting supplies ahead of the planned pullout from Afghanistan by international forces.

A police official told DPA that the death toll and the number of tankers gutted might rise as information from the remote town of Sorab trickles down to the provincial capital, Quetta.

Shahzada Farhat, a spokesman for the local police force, said the attackers first fired rocket propelled grenades at trucks and then opened fire with automatic weapons.

The oil takers caught fired as a result.

There was no immediate claim of responsibility, but the anti-Shiite Lashkar-e-Jhangvi group, which has links to al-Qaeda, has been active in Balochistan in recent months.