Video shows Raja Jackson, the son of former UFC champion Quinton "Rampage" Jackson, repeatedly punching an apparently unconscious pro wrestler, Stuart Smith, at the KnokX Pro Wrestling Academy in Los Angeles.

Rampage Jackson apologized on social media on behalf of his son and said the incident was a miscommunication. He said his son was unexpectedly hit in the head moments before Smith's match and was told that he could get his "payback" in the ring as part of the show.

The wrestler shown to encourage Raja Jackson to "get a receipt" on Syko Stu has addressed the incident on Saturday night.