WAYANAD: Two girls have surrendered to the police after murdering an elderly man and dumping the body in a sack. The incident took place in Ambalavayal in Wayanad. The deceased has been identified as Ambalavayal native Muhammad (68). Both of them are minor girls. Police have also taken their mother into custody. The children told the police that they hit Muhammad on the head with an ax after seeing him harass their mother. The children and their mother were living in a rented house owned by Muhammad.