A martial art expert has been caught on camera headbutting a man before repeatedly punching him as the pair stood in a boxing ring.
In the distressing CCTV the two men can be seen talking before one strikes the other, at a gym in Holywell, Wales.
When the second man is down, he appears to be repeatedly punched to the face and kneed, before a woman steps into the ring to try to separate them.
No punches seem to be thrown from the man who received the headbutt, who staggers to his feet with blood dripping from his mouth.
Words are then exchanged between the pair before the video ends.