The bubbling R&Beef between Sisqo and Kyle Norman of Jagged Edge came to a head backstage when the two came to blows backstage at a concert in North California.

Video footage of the two singers throwing punches and shoving each other backstage at the Concord Pavilion surfaced over the weekend.

While the recording is short, the sound of glass shattering can be heard as the two fight around the room, as onlookers shout expletives.

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Reports of bad blood between the singers goes back several years following a tense run-in they had years ago.

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“I’m [going to] tell the whole story,” shared Norman’s J.E. group-mate Brandon Casey during a recent radio interview withThe Breakfast Club. “We were in an elevator. We were getting on, and Sisqo was getting off. Kyle was like ‘What’s up,’ Sisqo ain’t say nothing…Sisqo was like ‘Oh, I didn’t see ya’ll I was sleepy,’ and Kyle was like ‘Ok, well stay sleep, bitch.’

Dru Hill and Jagged Edged were both performing at an old school concert over the weekend that featured Babyface,Blackstreet, 112 and NEXT.

Neither of the two singers has released a statement regarding the incident.

(Photos from Left:  Ben Horton/Getty Images for BET, Ian Gavan/Getty Images)