Chris Brown’s 34th birthday party allegedly ended with a physical altercation between Breezy and Usher.

According to a report by Hollywood Unlocked, the fight took place on Friday during Chris Brown’s birthday bash at Skate Rock City in Las Vegas. A source told the outlet that things took a turn when a visibly intoxicated Brown acted in a “disrespectful” manner toward Teyana Taylor.

Usher, among others, apparently intervened in an effort to calm Brown down. Instead, Chris called the Confessions artist a “coward,” before the argument escalated outside the venue, where Breezy and his security team reportedly jumped Usher. Witnesses claim the beatdown resulted in Usher receiving a “bloodied nose.”

Neither Usher, Brown, or Taylor have confirmed the story.