Keith Kizer, Executive Director for the Nevada State Athletic Commission (NSAC), has confirmed with ( via email at least one fighter from this past Saturday’s “UFC 143: Diaz vs. Condit” card in Las Vegas has failed their drug test.

Kizer stated he is still waiting for all the steroid and drug test results to come back but he will address the positive test later today.

If you have been following the Nick Diaz-Carlos Condit rematch news then you can already probably connect the dots on at least who the fighter is that tested positive. Stay close to as more information becomes available on this developing story.

Updated (6:10 p.m. ET): NSAC Executive Director Kizer has confirmed that Nick Diaz has indeed tested positive for marijuana. The official statement reads as follows:

“The following athletes were tested: Nick Diaz, Carlos Condit, Fabricio Werdum, Josh Koscheck, Renan Barao, Ed Herman, Dustin Poirier, Max Hollaway, Matt Riddle, Henry Martinez, Edwin Figueroa, Alex Caceres, Matt Brown, Chris Cope, Rafael Natal, Michael Kuiper, Stephen Thompson and Dan Stittgen. All results received thus far have been negative, except Mr. Diaz tested positive for marijuana metabolites. A complaint for disciplinary action against Mr. Diaz has been filed.

Updated (7:21 p.m. ET): UFC President Dana White has now also commented on Diaz testing positive for marijuana in this statement sent out via email by the UFC PR department:

“I am beyond disappointed that he tested positive for marijuana. It is now in the hands of the Nevada State Athletic Commission.”

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