Former heavyweight champion Brock Lesnar, the MMA and WWE star who recently competed at UFC 200, was notified Friday of a possible drug violation.
The potential violation resulted from an out-of-competition drug test administered by the U.S. Anti-Doping Agency on June 28. The results of those tests came back July 14. The USADA then notified Lesnar and the UFC of a positive drug test.
Lesnar beat Mark Hunt by unanimous decision at UFC 200 in his first fight in five years after he retired from MMA in 2011.
"The UFC organization was notified today that the U.S. Anti-Doping Agency (USADA) has informed Brock Lesnar of a potential Anti-Doping Policy violation," the UFC said in a statement Friday.
The U.S. Anti-Doping Agency administrates the UFC's anti-doping policy independently.
"It is important to note that, under the UFC Anti-Doping Policy, there is a full fair legal review process that is afforded to all athletes before any sanctions are imposed," the statement added.
Fighters are usually subjected to four months of drug testing before their bout if they are returning from retirement. Lesnar was exempted by virtue of the UFC's anti-doping policy that can be invoked in extenuating circumstances.
After he signed for the fight, Lesnar was subjected to testing, and he was tested five times by the USADA over a span of two weeks before the fight.
Lesnar has the right to ask for a 'B' sample to be tested and can also file an appeal.
Interim light heavyweight champion Jon Jones was also flagged for a doping violation for a test taken on June 16, and because the results of his test were available before UFC 200, he was taken off the card.
The results of Lesnar's positive test were not available until Thursday.