UFC light heavyweight Thiago Silva has failed his UFC on FUEL TV 6 post-fight drug screen.

UFC officials today announced that Silva tested positive for marijuana metabolites and has been suspended six months and ordered to take part in drug rehab program.

Silva competed in the co-main event of the Nov. 10 event and earned a third-round submission victory over Stanislav Nedkov.

"Thiago Silva tested positive for marijuana metabolites following his bout at UFC on FUEL TV in Macau," the organization's statement read. "The UFC organization has a strict, consistent policy against the use of any illegal and/or performance-enhancing drugs, stimulants or masking agents.

"Silva has admitted to taking the banned substance and has agreed to participate in an approved drug-rehabilitation program and serve a six-month suspension retroactive to the November 10 event. He must pass a drug test upon completion of the suspension before receiving clearance to fight again."

MMAjunkie.com (www.mmajunkie.com) later confirmed with UFC officials that Silva was not issued any financial penalty. However, the result of the bout will be overturned to a "no decision."

Featuring a headlining bout between Cung Le and Rich Franklin, UFC on FUEL TV 6 took place Nov. 10 at Venetian Macau Resort Hote's CotaiArena in Macau. In the absence of an athletic commission to govern the event, UFC officials took the role of overseeing the fight card.

Silva, of course, also failed a post UFC-125 drug test in January 2011. After dominating Brandon Vera to earn a decision win at the event, Silva was suspended and fined by the Nevada State Athletic Commission for submitting a fake urine sample.

Source: http://mmajunkie.com/news/31751/thiago- ... ension.mma