The vehicle was carrying water for troops in the Shakai valley, 25km from Wana. It hit a landmine planted on the road by militants, a local administration official said.
One soldier died and three others were injured, said the official, who requested anonymity.
ROCKET ATTACK WOUNDS TWO: In another incident two people were wounded on Monday when unidentified attackers fired rockets into a paramilitary fort in tribal homelands, where government forces are hunting al Qaeda-linked militants.
One trooper was seriously wounded and a student slightly hurt, hospital sources said, when one of four rockets exploded near an office building inside the fort at Razak, on the border between North and South Waziristan.