Former UFC featherweight and lightweight champion Conor McGregor has announced his retirement from the sport.
The 30-year-old announced his decision on his Twitter account on Tuesday morning, stating that he had 'retired from the sport formally known as Mixed Martial Art'.
McGregor returned to the Octagon in October almost two years after his previous bought but it was not to be a successful return as he tapped out in the fourth round against Khabib Nurmagomedov.
Moments later there were ugly scenes at the T-Mobile Arena as the Russian jumped out of the Octagon to attack McGregor's jiu-jitsu coach Dillon Danis, while the Dubliner was involved in a bust-up with a member of Nurmagomedov's team before they were tackled by security.
Both fighters were fined and suspended, with McGregor's ban due to expire on April 6.
However, the Dubliner has now announced his decision to retire from the sport.
"Hey guys quick announcement, I've decided to retire from the sport formally known as "Mixed Martial Art" today," he tweeted.
"I wish all my old colleagues well going forward in competition.
"I now join my former partners on this venture, already in retirement.
"Proper Pina Coladas on me fellas!"
McGregor is one of the sport's biggest stars after winning the interim featherweight title by knocking out Jose Aldo inside 13 seconds at UFC 194. Although he lost to Nate Diaz at UFC 196 in his welterweight debut, he bounced back to win the rematch, while his defeat of Eddie Alvarez for the lightweight championship saw him become the sport’s first dual-weight champion.
He took time away from the sport to fight Floyd Mayweather in his first professional boxing match with the American prevailing in the tenth round by TKO.
McGregor previously announced his retirement in April 2016 when he tweeted: "I have decided to retire young. Thanks for the cheese." However, he retracted the statement a short time later.
Tuesday's announcement comes amid reports that McGregor was in negotiations over a return to the Octagon in July.