Gunmen on Friday ambushed a minibus carrying children to school in Hangu, killing the driver, wounding two children and apparently kidnapping six others, police said. The bus was ambushed outside the town of Hangu in the country's troubled North West Frontier Province, which borders Afghanistan and is plagued by sectarian violence as well as Taliban and Al-Qaeda-linked militants. "Unknown gunmen fired at the school van carrying Shiite students. The driver was killed, two children were injured, while six appear to have been kidnapped by the attackers," local police station chief Saeed Khan told a foreign news agency. "Police are searching for the attackers in the nearby mountains," he added, saying he had no further details about the missing students.