Babu (32), lived with his in-laws and ran a small business jointly with his mother-in-law Jayalakshmi (48).
Jayalakshmi asked her son, Kranthi (17), to drop her husband at the railway station this morning. When he returned, he found his mother, sister Rajeswari (28) and brother-in-law Babu hanging from the ceiling of house.
Babu and Rajeswari's daughter Yasaswini (2) and infant son Navaneeth (11 months) were found smothered to death under the pillows.
Deputy Superintendent of Police Ravi Kumar told PTI that the bodies had been sent for autopsy and further probe was on.