Heavily armed militants today attacked trucks carrying supplies to NATO and US forces in Afghanistan, killing eight persons and gutting nearly 50 vehicles on the outskirts of the Pakistani capital, Islamabad.<br/><br/>This is the first time that such vehicles were attacked near Islamabad. The attack was carried out at around midnight when the vehicles were parked at the Tarnol depot in a suburb of Islamabad. Ten to 12 attackers opened fire at the vehicles and then set them ablaze. <br/><br/>At least 50 tankers and trucks, including several loaded with military vehicles, were reduced to a twisted mass of metal by a massive fire and several explosions. <br/><br/>Eight persons, including drivers, their helpers and local residents, were killed and eight others injured in the attack. <br/><br/>Witnesses and police said the attackers were traveling on six motorcycles and two pick-up trucks and escaped after the brazen assault.