The welterweight fighter on Tuesday confirmed to media that he failed his second post-fight drug test for marijuana and has been released from the UFC.

Riddle flunked a test following UFC on FUEL TV 7, where he earned a split call against Che Mills (15-6 MMA, 2-2 UFC).

Several critics, including UFC President Dana White, said Riddle should have won a unanimous decision. White also disparaged Mills’ performance, saying the fighter didn’t press the action late in the fight when he had a positional advantage.

Mills was later cut by the promotion in a spate of pink slips handed out prior to UFC 157.