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The United States Anti: American sprinter Erriyon Knighton, embroiled in a doping controversy, finished fourth in the men's 200-metre final at the Paris Olympics on Thursday night. However, his abrupt departure from the media zone without taking interviews has only fueled further suspicion regarding his eligibility to compete.

Knighton tested positive for the banned steroid trenbolone during an out-of-competition test on March 26. The United States Anti-Doping Agency (USADA) opted not to suspend, attributing the positive result to contaminated meat. This decision allowed Knighton to compete in the Paris Olympics qualifiers, a move that has sparked widespread concern.

China's Anti-Doping Agency (CHINADA) publicly questioned USADA's handling of the case, calling for an independent investigation into what it described as a serious breach of the World Anti-Doping Code and a potential cover-up of anti-doping violations, reports Xinhua.