Former UFC champion Quinton “Rampage” Jackson has been apologetic and said that he is “very upset” after his son, Raja Jackson, committed what organizers called “a selfish, irresponsible act of violence” against a wrestler during an event Saturday night in Sun Valley, California.

Jackson interrupted a match during the “Knox Experience” show put on by the WWE ID-affiliated KnokX Pro Wrestling Academy. He picked up and slammed Stuart Smith, who wrestles under the name Syko Stu, repeatedly punching him in the face.

The incident was livestreamed on Jackson’s Kick account.

Jackson and Stu faced off against each other in a live-streamed wrestling bout, when Jackson brutally attacked Stu and injured him. It was an incident that left Stu hospitalized.

“I don’t condone my son’s actions AT ALL!”

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