Conor McGregor and Machine Gun Kelly clashed outside Sunday night’s MTV Video Music Awards.

The UFC star and the rapper got into a physical altercation on the red carpet before the show kicked off in New York’s Barclays Center. 

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Photos of the incident appear to show McGregor lunging at MGK while several people try to separate them. 

NEW YORK, NEW YORK – SEPTEMBER 12: Machine Gun Kelly (center top) and Conor McGregor (center bottom) attend the 2021 MTV Video Music Awards at Barclays Center
NEW YORK, NEW YORK – SEPTEMBER 12: Machine Gun Kelly (center top) and Conor McGregor (center bottom) attend the 2021 MTV Video Music Awards at Barclays Center — Photo: Noam Galai/Getty Images for MTV/ViacomCBS

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Conor McGregor
Conor McGregor — Photo: Jeff Kravitz/MTV VMAs 2021/Getty Images for MTV/ViacomCBS

McGregor later insisted to ET backstage that “absolutely nothing” happened between them.

“Absolutely nothing. I don’t know. He showed up, and I don’t know. I don’t know the guy,” he told ET’s Rachel Smith.

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“Nothing happened with me, I only fight real fighters, people that actually fight, you know what I mean,” Conor continued. “I certainly don’t fight little vanilla boy rappers. I don’t even know the guy. I don’t know anything about him, except that he’s with Megan Fox.”

According to an eyewitness, McGregor and MGK “exchanged some words” on the red carpet, before the MMA fighter lunged at the musician. MGK and Fox subsequently left the carpet and threatened not to pose for photos, the eyewitness says, but then they returned once McGregor left.

McGregor later presented an award to Justin Bieber, while MGK performed “Papercuts” with Travis Barker.