Armed men shot dead four persons and injured two others due to old enmity in Pakistan's Punjab province Wednesday, police said. The killing took place outside the court of Additional Sessions Judge Kharian. The assassins fled from the scene after the shooting incident. Because of an old feud between Mian Shahid and Mian Khalid groups in nearby village Chhokar Kalan, Khalid was killed few months ago. Shahid's brother Tahir and others had been arrested on the charge of this murder. As Shahid arrived at the court premises in connection with the hearing of the case, the gunmen belonging to the group ambushed his car and killed four persons. Shahid was wounded in the indiscriminate firing.