PESHAWAR: Unidentified assailants shot dead a tribal elder and his son early on Saturday in South Waziristan Agency's Wana headquarters, eyewitnesses said. Hiyatullah Mehsud and his son Pir Alam were gunned down in Wana's Rustam Bazaar and the attackers fled after the killing, the eyewitnesses said adding that it was a "personal feud" and not linked to militants targeting pro-government tribal elders. However, some tribal elders suspected that the killing might have been carried out by Al Qaeda-linked militants who targeted people collaborating with the government against them. Mr Mehsud got a government job recently after he provided information to the government about militants, but there was no independent confirmation about his cooperation with the government. Since mid-December last year, militants have assassinated a number of pro-government tribal elders, including the brother of Pakistan's ambassador to Qatar, Ayaz Khan. A local correspondent told News Network Internatioanal (NNI) that Mehsud had four or five death threats.