CONOR McGregor was accused of punching an Italian DJ in his face, leaving him with a bloody nose and lip in front of his horrified wife.
Police were called to assist UFC legend Francesco Facchinetti in a brawl at a St Regis Hotel in Rome.
Francesco Facchinetti displayed his broken life after the confrontation
McGregor, 33, along with his partner Dee Devlin, have been in Italy for the christening in the Vatican of their youngest child Rian.
However, the trip is set to end on a low note with Facchinetti (41), and Wilma Faissol (39), making allegations to their 1.5 million combined Instagram followers.
Facchinetti uploaded a video reliving the incident, and showed off his lip cuts.
Wilma also posted a series Instagram stories in which she accused the fighter of attacking her husband. She claimed that Notorious could have killed her.
It is not clear what caused the alleged melee.
SunSport reached out to McGregor's team in an effort to get their opinion on the incident.
According to Italian Police, they arrived on the scene at 5.30 a.m. after the incident.
McGregor was not contacted by police but "may be" in the coming days as the DJ plans on filing a formal complaint in Milan.
Facchinetti is also a radio and TV personality in Italy. He told his one million Instagram followers: "I could be quiet but someone like him who pulls off a punch, think about what could happen."
He said that "real fighters don’t behave like this" and accused the Irish MMA star for punching him "for nothing".
The DJ said that he was a hero, but instead he is a bully of a worst kind...
"He is dangerous and must be stopped. Now I see why he had 20 bodyguards. He was not there to defend himself from other people, but to protect others from him."
Wilma also took to Instagram to accuse McGregor of cheating her.
She said, "He could have killed himself, he split His lips and nose,"
Wilma claimed McGregor's bodyguards had been forced to stop him because he wanted to "keep beating Francis".
She claimed that the UFC fighters gave them hankies to wash the blood, before they told the couple to exit through the side door.
Wilma said, "I was crying, and I was shaking. We called the ambulance and police."
McGregor was previously in trouble after punching a man in The Marble Arch Pub, Dublin in August 2019.
After Desmond Keogh (50) refused to have a shot of whiskey, the UFC allegedly struck him.
Notorious was convicted for assault and sentenced to pay a PS860 fine. Then, he spent PS1.75million on the purchase of the pub.
McGregor still has to recover from the severe broken leg that he sustained in his first round loss to Dustin Poirier.
UFC's first simultaneous world champion at two weights, the UFC's UFC Champion of Two-Weights, suffered a fractured left fibula and tibia in the fight. He has promised to come back to finish his career "on his own terms".
SunSport has previously stated that McGregor will be returning to the Octagon "ahead-of-plan" since he is already back in the gym.
