Police comb Two Rocks Marina after body found POLICE are combing a boat harbour north of Perth after the discovery of a man's body floating in the water. A resident of Two Rocks found the body near a jetty at the local marina around 2pm yesterday. Police divers searched the water overnight while Major Crime Squad and forensic officers examined the scene. They are treating the death as a suspected homicide. The man's identity is unknown and it's not clear how long he had been in the water. Police do not believe he is missing NSW man Martyn Tann, who was last seen on April 2 at Mullaloo beach in Perth's northern suburbs.