DERA ISMAIL KHAN   -  A policeman was mar­tyred as unknown terrorists opened fire on him here in the limits of Hathala police station on Monday. According to a po­lice spokesman, a police consta­ble named Nazar Khan, a res­ident of Takwara village, was going to Kulachi Tehsil from home to attend security duty at a bank branch when some un­known terrorists targeted him on the way, leaving him dead. The assailants fled from the scene. The police reached the site and shifted the body to Muf­ti Mahmood Hospital. Later, the funeral prayer of the martyred constable was offered here at Ejaz Shaheed Police Lines.