Sircilla Rajaiah's daughter-in-law and three grandsons were found charred to death at his residence under mysterious circumstances early Wednesday and hours later the leader, his wife and son were taken into police custody for questioning.
Charred bodies of Sarika and her three children, who died on the spot due to burn injuries were recovered on Wednesday.
A leaking gas cylinder caused the fire, which killed Sarika (Rajaiah's daughter-in-law) and her three sons - Abhinav, Ayan, Sriyan.