The UFC world was rocked on Friday when, 12 days after prevailing over Mark Hunt in his UFC 200 bout, he was informed of a potential doping violation.

UFC’s statement, via USA Today:

“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 stemming from an out-of-competition sample collection on June 28, 2016,” UFC said in a statement.

Hunt, predictably, wasn’t very happy. He had accused Lesnar of being “juiced to the gills” before their fight, and he leaned in once again after the news broke. He told MMAFighting.com that “the cheaters get a slap on the wrist and walk off,” before taking to his Twitter account demanding the entire purse as retribution.