Narsingh Yadav was cleared to compete in Rio by the National Anti-Doping Agency of India, but WADA have won an appeal against the decision.
Indian wrestler Narsingh Yadav has been denied the chance to compete at Rio 2016 and will serve a four-year suspension after the World Anti-Doping Agency (WADA) successfully appealed against the National Anti-Doping Agency of India's (NADA) decision to exonerate the athlete.
Yadav, who was due to begin his campaign in the men's 74 kilogram class on Friday, tested positive for banned anabolic steroid methandienone on June 25 and July 5, but argued he had been the victim of sabotage.
NADA accepted Yadav's explanation that his food or drink had been tampered with and cleared the 27-year-old to compete in the Olympics.
However, that decision was challenged by WADA and its appeal to the Court of Arbitration for Sport (CAS) has proven successful.
A statement from CAS read: "The parties were informed that the application [from WADA] was upheld, that Narsingh Yadav was sanctioned with a four-year ineligibility period starting today [August 18] and that any period of provisional suspension or ineligibility effectively served by the athlete before the entry into force of this award shall be credited against the total period of ineligibility to be served.
"Furthermore, all competitive results obtained by Narsingh Yadav from and including 25 June 2016 shall be disqualified, with all resulting consequences (including forfeiture of medals, points and prizes).
"The CAS panel did not accept the argument of the athlete that he was the victim of sabotage and noted that there was no evidence that he bore no fault, nor that the anti-doping rule violation was not intentional.
"Therefore the standard four-year period of ineligibility was imposed by the panel."