The UFC legend kicked off his wild night by attending the Misfits Boxing 6 event in New Orleans to watch Chris Avila beat Paul Bamba in the main event.

While Diaz was enjoying the bout in the front row, he got into a heated argument with DeMoor, who was seated behind him. Video shows DeMoor heckling Diaz and calling him a "p****." Diaz then pitched the water bottle at DeMoor, and the two would have come to blows if onlookers hadn't stepped between them.

Hours later, Diaz was filmed getting into a physical altercation with a young man on the sidewalk outside the venue. Nate put the guy in a choke hold until his body went limp and he fell to the ground unconscious. Diaz then casually walked away.

The extent of the man's injuries was unknown, nor was it clear if he was taken to a hospital. It’s also unclear if police got involved.

Video of the assault has since gone viral. UFC boss Dana White and former UFC champ Conor McGregor reacted on social media to the video. White suggested the man attacked by Diaz could be pro boxer Jake Paul's brother, Logan (It wasn't, though). McGregor laughed and praised Diaz for his "rampage."