Police started probe into death of Congress Warangal LS nominee Rajaiah's kin. It may be noted that Rajaiah's daughter-in-law Sarika and her three children were charred to death in their residence under mysterious circumstances today. Police found a LPG cylinder in the room in which the kin were found dead. Police questioned Rajaiah and his son Anil two times today. They enquired about people staying in the house.