The Uttan Marine police have booked and arrested a fisherman for allegedly killing his colleague and dumping his body into the ocean. The police recovered the body from the seashore on Sunday. During the inquiry, the officials found bloodstains on the boat and on interrogating the accused, the facts about the incidents were revealed. According to the police, the deceased identified as Sananturam Hariram (34), was killed on September 21 by his colleague identified as Ramaswai Bhuneshwar Shriwas(28), a labour on the fishing boat.