Unidentified armed men gunned down a police official here on Sunday and escaped the scene. According to details, gunmen barged into rental room of ASI Abdul Ghaffar situated besides Daraban police station in Dera Ismail Khan and shot him dead. The murderers fled the scene after committing the crime and the body was shifted to hospital for postmortem. It should be mentioned here that six police officials have been gunned down in different areas of Dera Ismail Khan during past three weeks.