KHAIRPUR: At least four people died and three others injured in dreadful road accident here on Sunday. Police said that a trailer got of control of driver and it hit a tractor trolley and motorcycle in Shah Hussain area of Khaipur. Four people died on the spot in the accident while three others were injured. The trailer driver escaped from the scene of the accident. The bodies and injured were shifted to hospital for medico-legal formalities. The police impounded the trailer and after registering a case into the incident have started raids to arrest trailer driver at large.