He was 73.
Rao had been suffering from heart-related complaint and he passed away at around 4 PM today at a private hospital here, his nephew and Telangana BJP spokesperson N V Subhash told PTI.
Rajeswara Rao was Congress MP from Secunderabad here during the 1990s. He was also an accomplished singer and shuttle badminton player.
Condoling the death of Rajeswara Rao, Telangana Chief Minister K Chandrasekhar Rao recalled his association with him.
The departed leader had deep interest in public service, music and literature, the Chief Minister said, according to a release from his office.
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YSR Congress president Y S Jaganmohan Reddy too expressed grief over Rajeswara Rao's death.
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Condoling the death of Rajeswara Rao, Deputy leader of
Congress in Telangana Legislative Council P Sudhakar Reddy said the former MP's death is a loss to Congress.
Rajeswara Rao led a simple life despite being Narasimha Rao's son and his death is a loss to Telangana, State BJP president K Laxman said.