Militants attacked a Pakistani military convoy on Tuesday, killing three soldiers in the tribal badlands of Waziristan on the Afghan border, a security official said. The attack took place in the Kalundar Keley area of South Waziristan, about 60 kilometres (37 miles) north of the district's main town Wana. Militants attacked a security force patrol on Tuesday in Kalundar Keley area, killing three troops and wounding two others, a senior security official in the area told a foreign news agency on condition of anonymity.