Palakkad: The son-in-law of Rosli, one of the victims of the Elanthoor double human sacrifice, was found dead. The deceased is Biju (44) of Vattoli house in Kattappana. Biju is the husband of Rosli's daughter Manju. He was found hanging in a rented house on Nambeesan Road in Enkakkad, Vadakancherry.