Masked gunmen shot dead a pro-government tribal elder and wounded two people in Pakistans trouble-plagued South Waziristan region on the Afghan border, government officials said yesterday. Five gunmen ambushed Mehr Dil Khan as he was travelling in a van to Wana, the main town in South Waziristan, killing him and wounding two other passengers on Monday.It was a targetted killing as he was a government supporter and a member of the regions council, said a government official in Wana, who declined to be identified.