Gunmen attacked three container trucks carrying NATOsupplies en route to Afghanistan in Pakistan’s troubled northwest on Monday,killing two people, officials said.The trucks came under fire in the Wazir Dhand area of Khyber, one of seven districtsthat make up Pakistan?s semi-autonomous tribal belt, as they were on their way toAfghanistan, Pakistan’s (Geo News) reported.Pakistan is a major transit supply route for the NATO mission in landlockedAfghanistan. “The three container trucks were on their way to Afghanistan whenseven to eight gunmen opened fire at them in Wazir Dhand area, killing two driversand wounding two others,” a senior local administration official, Ali Sher told.He said two of the drivers were missing since the incident and it was not clear ifthey had escaped or if militants had kidnapped them.Another local administration official also confirmed the incident and said theattackers had fled.No group has admitted responsibility but the Taliban have in the past claimed suchattacks.