Former UFC fighter Rampage Jackson has responded after his son, Raja Jackson, violently attacked professional wrestler Stewart Smith, also called Syko Stu, during a wrestling event.

Video from the show at KnokX Pro Wrestling Academy shows Raja Jackson running into the ring during a match and slamming Stewart Smith to the mat. He then got on top of Smith and repeatedly punched him nearly two dozen times before other wrestlers stepped in to stop the attack.

In the video, Smith seems to lose consciousness and is unable to defend himself. He lays on the ring floor with blood streaming from his face as the attack continues.

Reports say that Smith was seriously injured and had to be hospitalized after the assault.