Earlier today, Keith Kizer of the Nevada State Athletic Commission announced that Nick Diaz tested positive for marijuana after his UFC 143 fight with Carlos Condit.

It's been a turbulent few days for Diaz. After losing a close and controversial decision to Condit in the main event of UFC 143, a frustrated Diaz announced his retirement from MMA. Yesterday, word leaked of the UFC's plans for a Condit vs. Diaz rematch as Condit's first defense of the UFC Interim Welterweight Title, but those plans were immediately called into question at the same time that Kizer announced one fighter had failed a drug test. Many assumed it was Diaz, and those suspicions were proved to be correct.

Now, the UFC has issued a statement from Dana White, and it is short and clear:

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

This is not the first time Diaz has tested positive for marijuana. After his 2007 defeat of Takanori Gomi in one of the final Pride shows, Diaz also failed a drug test, resulting in that victory being overturned into a No Contest. This is also the second time in his recent UFC tenure that Diaz has caused the company massive headaches. His failure to show up for press conferences in the lead-up to UFC 137 caused them to pull him from the planned Diaz vs. GSP main event, and now this news will surely derail any plans for Condit vs. Diaz 2 happening anytime soon.

For more on this story, check out all our Bloody Elbow coverage:

• Nick Diaz Tests Positive For Marijuana After UFC 143
• Carlos Condit Vs. Nick Diaz Rematch In Jeopardy, Was Never 'Official'
• Carlos Condit Vs. Nick Diaz Rematch Becomes Official Amid Managerial Confusion
• NSAC Boss Keith Kizer Confirms One Positive Drug Test
• SBN coverage of UFC 143: Diaz vs. Condit