DERA ISMAIL KHAN: Militants set off a roadside bomb and fired rockets and mortars at security posts in separate attacks on Wednesday in a tribal region, leaving two soldiers wounded, an official said. The soldiers were in a pickup truck travelling along a road in Shakai, a mountain valley in South Waziristan tribal region, when the bomb exploded nearby and wounded them, a government official said on condition of anonymity because he was not authorized to make media comments. The victims were moved to a military hospital in Wana, South Waziristan's main town, he said. There was no word on how seriously they were hurt. Hours before the bombing, militants targeted several security posts with around 45 rockets, mortars and assault rifles at various locations in Shakai, a former militant stronghold, he said. No one was hurt in the spate of small-scale attacks that began after midnight on Tuesday and continued through the early hours of Wednesday, he said. Troops retaliated, firing mortars and other heavy weapons, but it was not known whether there were any casualties among the assailants. Authorities said they had launched a search operation in the Shakai region.