Suspected Islamist militants Thursday blew up a tanker in northwest Pakistan carrying fuel for NATO troops across the border in Afghanistan. The driver escaped unhurt while his helper was wounded after a timed bomb planted on the tanker exploded outside Peshawar, police official Hazrat Ali told AFP, setting the vehicle ablaze. Bomb disposal official Tanvir Ahmed said that the timed bomb was attached to the tanker with a magnet. Nobody claimed responsibility, Ali said, but Taliban and members of local militant group Lashkar-e-Islam (Army of Islam) have regularly attacked NATO supply vehicles on the main route through northwest Pakistan. About 80 percent of supplies destined for the 121,000 US and NATO troops in landlocked Afghanistan pass through Pakistan.