At least four people have been killed in a suspected US drone attack on a funeral here Tuesday, report said. According to preliminary reports, at least three guided missiles apparently fired by US drones hit a funeral of a local militant commander at Khwaja Kalay area of Makeen in South Waziristan agency. Four casualties have so far been confirmed in the attack while six others were injured, it was reported. The strikes apparently targeted the suspected militants loyal to local Taliban commander Baitullah Mehsud, a private TV channel reports.