A man suffered serious head injuries when crowd disorder forced a boxing match to be abandoned in South Yorkshire.
The violence happened during a professional bout between boxers Damon Jones and Simone Lucas at the Metrodome in Barnsley.
Trouble began when visiting supporters from Leeds, who were seated in a stand, began launching missiles at a smaller group seated lower down.
The group identified themselves by singing songs associated with the Leeds football team and were there to support Jones.
The group reacted on the floor and more chairs and bottles were thrown.
At least two people suffered visible cuts to the head, according to spectators.
Security staff attempted to stop the fighting, but the show was stopped after three rounds.
Jones was even handed the microphone by the Master of Ceremonies in an attempt to calm the crowd.
Police have confiscated footage of the fight from Hatton Boxing TV.
The main event – featuring hometown fighter Matthew Mallin and Denaby’s Adam Jones – was not allowed to go ahead due to safety fears.
A spokeswoman for South Yorkshire Police confirmed an investigation was under way into a disturbance at the Metrodome on Friday at around 10.20pm.
“One man was taken to Barnsley District General Hospital with suspected head injuries,” she said.
“Anyone who witnessed the disturbance is asked to contact South Yorkshire Police.”
n Witnesses or anyone with information should call 101, quoting incident number 1,265 of September 21.