At least 27 tankers carrying fuel for Nato troops in Afghanistan were attacked in southern Pakistan.

The attack took place on the edge of Shikarpur town in Sindh province yesterday, the same day Pakistan closed a major border crossing to protest over a Nato incursion into its territory that killed three Pakistani soldiers.

No-one is believed to have been killed or wounded in the tanker attack.

Police official Mir Ahmed Chandio said the tankers were parked at a terminal when gunmen opened fire, forcing people to flee before setting the vehicles on fire.

An Associated Press photographer at the scene said the trucks were still alight several hours after the attack.