A policeman committed suicide after killing a fellow constable and a passenger in Khairpur on Thursday. Police said Shaikh Rasheed arrived at the police station armed and started firing at his fellow constables. He killed another unidentified man in the police station. After killing two, he killed himself with his own gun. According to SHO Zahid Abro, Abdul Rasheed Sheikh shot dead constable Abdul Razaaq Galal deployed at Army More police picket near Babarlou area of Khairpur. He said the other person killed was identified as Badshah. Sources said the murder was the outcome of a personal enmity.