Singh, who played as centre-half and also represented the country at the 1984 Los Angeles Olympics, had been in hospital since April 24.

On Thursday, he was shifted from the Intensive Care Unit (ICU) of the Vivekanand Hospital to the non-Covid facility after he tested negative for the virus and his condition improved.

But within a day of being moved out of the ICU, his condition deteriorated.

Besides the Moscow and Los Angeles Olympics, Singh also played in several top international tournaments including the Champions Trophy in Karachi (1980 & 1983), Silver Jubilee 10-Nation Cup (Hong Kong, 1983), World Cup (Mumbai, 1982), Asia Cup (Karachi, 1982), the India-Pakistan Test series in 1981 and the Malaysian Quadrangular series in 1980.

Singh began his international career in 1979 when he was included in the Junior World Cup team.

The Union Minister for Youth Affairs and Sports, Kiren Rijiju, tweeted his condolences, saying, "I'm deeply saddened to learn that Shri Ravinder Pal Singh ji has lost the battle to Covid-19. With his passing away, India loses a golden member of the hockey team that won gold in the 1980 Moscow Olympics. His contribution to Indian sports will always be remembered."

On Wednesday, Singh's niece, Pragya Yadav, had requested Hockey India for financial support for the former player and the federation's president had sanctioned a sum of Rs five lakh for his treatment and hospital stay.