Olympic and Paralympic Committee said Friday afternoon that swimmer Michael Andrew’s decision not to wear a mask in the mixed zone at the Tokyo Aquatics Centre is a “violation” of COVID-19 protocols and that it is reviewing the matter with USA Swimming and “will take action as needed.”.

Andrew, the highest profile unvaccinated American Olympian, did not wear a mask in the mixed zone after finishing a disappointing fifth in the men’s 200-meter individual medley Friday morning.

Andrew, the American record-holder in the 100-meter breaststroke who has failed to win a medal in two events at these Games, said three weeks ago that he didn’t want taking the COVID-19 vaccine to interfere with his training schedule

“My reason behind it is, for one, it was kind of a last moment, I didn’t want to put anything in my body that I didn’t know how I would potentially react to.