LAUSANNE, Switzerland (AP) — Swimming’s governing body says it has banned American diver David Bonuchi for two years for taking a banned stimulant at the 2013 world championships.

FINA says it “discovered that during the period” of the event held in Barcelona, Spain, Bonuchi “used a prohibited substance amphetamine” without a medical exemption.

The governing body did not state that the 22-year-old diver tested positive.

Bonuchi’s ban was applied from July 21, 2013 — the day he placed 10th in the synchronized 10-meter platform event with Toby Stanley.

The former University of Missouri student was the Southeastern Conference Male Diver of the Year in 2013.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.