The announcement came just days after Jones defeated Daniel Cormier on Saturday in the main event of UFC 182 at the MGM Grand Garden in a five-round decision that left many considering him as the greatest mixed martial arts fighter of all time.
But in a random drug test given to him on Dec. 4 by the Nevada Athletic Commission, Jones tested positive for benzoylecgonine, the main metabolite in cocaine.
The Nevada commission follows the World Anti-Doping Agency code and benzoylecgonine is not banned out-of-competition. As a result, the commission was unable to penalize Jones or prevent him from fighting despite knowing of the positive test.
It conducted a follow-up test later in December that Jones passed. Yahoo Sports was unable to get the exact date of the second test that Jones passed.