Cathal Pendred's UFC Dublin opponent Mike King has failed a drug test for steroids and will serve a nine-month ban.

King tested positive for nandrolone after his defeat to Pendred at the O2 Dublin.

In addition to his nine-month ban, King will be docked his $50k bonus for competing in the Fight of the Night.

The UFC released a statement saying: "UFC middleweight Mike King tested positive for nandrolone following his bout against Cathal Pendred at UFC Fight Night Dublin: McGregor vs. Brandao on July 19, 2014.

"He was informed that his positive test violated the UFC Fighter Conduct Policy and Promotional Agreement with Zuffa, LLC.

"The UFC has a strict, consistent policy against the use of any illegal and/or performance-enhancing drugs, stimulants or masking agents by our athletes.

"He agreed to serve a 9-month suspension retroactive to the event and must pass a drug test before receiving clearance to compete again. He will forfeit his $50,000 Fight of the Night bonus."