LONDON: British sprinter Chijindu Ujah(pix) who won the men's 4x100m relay silver medal at the Tokyo Olympics, has been suspended provisionally for allegedly breaching anti-doping rules during the Games.

The Athletics Integrity Unit (AIU) revealed on Thursday that following the conclusion of the Tokyo Olympic Games, the doping control laboratory in Tokyo notified the International Testing Agency (ITA) that Ujah's test showed the “presence/use of a prohibited substance (Ostarine and S-23),” Xinhua reported.