Alex Caceres and Riki Fukuda both failed their post-fight drug tests following bouts in Japan at UFC on FUEL TV: Silva vs. Stann.

The event took place earlier this month. Caceres’ win was changed to a no-contest and he was given a six-month suspension.

Fukuda confirmed earlier this week that he had been released following a loss to Brad Tavares, and it would appear this failed drug test had much to do with it.

Here is the statement from UFC officials:

Caceres tested positive for marijuana metabolites following his bout. He has agreed to attend drug rehabilitation classes and will receive a 6-month suspension retroactive to the date of the event and must pass a drug test upon completion of the suspension before receiving clearance to compete again. The outcome of Caceres bout against Kyung Ho Kang will be changed to a no contest.

Fukuda’s results showed the presence of Phenylpropanolamine, Norpseudoephedrine and Ephedrine, which are stimulants and banned substances. Based on Fukuda’s last loss he has been released from his contract with the UFC and the results of his positive test will be reported to the official Association of Boxing Commissions record-keeper.

This is a big blow for Caceres, as he was riding a strong win streak and appeared poised for a possible Top-10 opponent. We’ll have to wait and see if the UFC “punishes” him further in regards to his next opponent.