KOHAT (INP) - Gunmen kidnapped and killed a retired colonel while a security man died in an exchange of gunfire with the kidnapers, police said Saturday. According to police, unknown armed men abducted Col (r) Shakil Ahmed Tariq when he was returning home after offering Fajr prayers in Defence Colony. National Highway Authority (NHA) officials deployed there tried to rescue the kidnapped man that stoked a firefight, killing head constable Hamid Ali and injuring constable Adnan and ASI Chanar Gul critically. The wounded were shifted to hospital. Later, the kidnappers gunned down Tariq and dumped his body near Zero Point. The law enforcers launched a search operation after cordoning off the area.