Former Karnataka Chief Minister BS Yediyurappa's granddaughter Soundarya was found dead at her home in Bengaluru on Friday.
The 30-year-old is suspected to have died by suicide. The police have registered a case of "unnatural death".
Soundarya, a doctor, was the daughter of Mr Yediyurappa's second daughter Padmavathi. She married a colleague at her hospital, Dr Neeraj S, in 2018.
The police said on Friday, her husband left for the hospital and she stayed at home.
When the help arrived, she kept knocking but no one opened the door. She then called Neeraj S, who called on his wife's phone but got no response.
The door was forced open, the police said.
Chief Minister Basaaraj Bommai, many ministers and senior BJP leaders visited Mr Yediyurappa's home after learning of the tragedy.