American sprinter Christian Coleman was suspended Wednesday by the Athletics Integrity Unit for missing doping tests.
The AIU updated its list of athletes on provisional suspension to include the 100-meter world champion hours after he revealed details of the case with a statement on Twitter.
Coleman has been temporarily banned from competition until a final decision at a hearing conducted under World Athletics Anti-Doping rules or the Integrity Code of Conduct.
Coleman had a previous whereabouts charge dropped last year ahead of the world championships and was a favorite for Olympic gold in the 100 meters ahead of the Tokyo Games.