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SAN DIEGO – Rapper XXXTentacion was knocked unconscious and a 19-year-old concertgoer was stabbed during a brawl that broke out during a performance at the Observatory North Park, police said Thursday.

Someone rushed up on stage at the venue on University Avenue near 29th Street and punched XXXTentacion, whose real name is Jahseh Onfroy, around 8:45 p.m. Wednesday, San Diego police Sgt. Jordan Wells said. The Florida rapper was whisked offstage as security guards fought with about 10 other people.

At some point during the melee, the 19-year-old victim was stabbed. He was taken to a hospital and was treated for a non-life-threatening injury, according to the sergeant.

The venue was emptied following the fight and police officers were on hand to make sure the crowd dispersed. No arrests were immediately reported.

Authorities sought Thursday to identify the assailant or assailants in the brawl.  There were no arrests in the case as of Thursday afternoon, SDPD Officer Billy Hernandez said.

XXXTentacion, 19, is scheduled to perform Thursday evening at the Observatory in Santa Ana, according to his Facebook page.

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