There were skirmishes inside and outside the venue.
The Las Vegas Metropolitan Police Department have confirmed that there were no arrests made in the aftermath of UFC 229.
As per the norm with every McGregor fight, plenty of fans travelled to Las Vegas as The Notorious made his eagerly-anticipated return to mixed martial arts after a two-year hiatus from the sport.
The fighting in the Octagon spilled out into the crowd after the fight when
Khabib Nurmagomedov jumped over the cage and made a beeline for McGregor’s training partner, Dillon Danis.
After the fight ended, McGregor was also attacked by three of Nurmagomedov's teammates who were later arrested and released because the Dubliner refused to press charges.
The Nevada Athletic Commission will investigate the incident and Nurmagomedov is likely facing a fine and suspension.
On Monday,
John Kavanagh told Joe Rogan he has no issues with what the lightweight champion did but he does hold some ill feeling towards the three men that attacked McGregor in the Octagon after the fight ended.
As the crowd exited the T-Mobile Arena, the animosity spilled out into the foyer and the streets of Las Vegas as various images were shared online of UFC fans getting into fights and skirmishes.
Regarding these ugly scenes, the Las Vegas Police Department have released the following statement: "LVMPD officers assisted with breaking up several small fights that took place after Saturday night’s UFC main event in Las Vegas. After all parties were separated, no one involved wished to press charges and no arrests occurred.”
During his post-fight press conference,
Khabib laid some of the blame for his actions on McGregor's pre-fight taunts and jeers, but he did offer an apology.
"I want to say sorry to the Athletic Commission, Nevada, Vegas, I know that this is not my best side," he said.
