A media conference for UFC 279 in Las Vegas had to be called off after fighters Kevin Holland and Khamzat Chimaev got into a scuffle backstage, UFC president Dana White announced to media.

Holland and Chimaev weren’t even scheduled to fight each other, with Chimaev (11-0) set to take on Nate Diaz (21-13) in the main card. Holland (23-7) will face off against Daniel Rodriguez (16-2).

WATCH IN THE VIDEO ABOVE: The tense moment Dana White calls off press conference

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Amid tense and confusing scenes, White faced the media and said: “Absolute s***show back there.”

“There’s lots of crazy s**t back there,” and then moments later told reporters: “Yeah, this ain’t going to happen.”

Holland and Chimaev exchanged words and got into a physical altercation.

“I apologise, everybody … This has never happened in the history of this company. Let me tell you this is the right decision not to do this press conference right now.

“Yeah, I hear you,” he continued as boos rained down from those in attendance. “I’m with you. But for everybody’s safety, this is the right decision. I apologise.”

The UFC posted White’s initial comments to Twitter.

“There were multiple things going on at the same time. It wasn’t just one thing that erupted,” White said.

“There was security over there, there was no security over here … because everyone was dealing with the other thing, and once it all started erupting it was a complete sh**tshow.

“There were four involved … [It’s not good for business]. It’s bad, it’s all bad.”

White indicated later more security would now become standard at press conferences and the UFC would be prepared to intercept further confrontation at weigh-ins and before the fights themselves.

None of the fighters suffered injuries and none of the fights at UFC 279 on Saturday are in jeopardy as a result of the incident.

Tai Emery’s X-rated celebration after winning fight.

Tai Emery’s X-rated celebration after winning fight.