In a statement the ITU said:
“ITU has been informed of allegations involving Henri Schoeman and an adverse analytical finding that would have occurred during the 2016 Rio Olympic Games.
ITU has promptly launched an investigation into the matter. ITU has been in touch with the Athlete, who is fully cooperating providing information.
It should be noted that ITU was not the testing or results management authority for this sample. Pursuant to the Rio Olympic Games Anti-Doping Rules, for all samples collected during the Rio Olympic Games, the IOC was responsible for the testing programme and the CAS Anti-Doping Division is (as of Rio 2016) responsible for the results management and sanctioning of an athlete as far as Olympic results are concerned.