Police investigating a mass brawl at a boxing event in Leeds are appealing for mobile phone footage and other images.
Around 40 people were involved in the fighting which broke out during an event hosted in the Centenary Pavilion at Leeds United's stadium on Saturday night.
Footage which emerged online showed people in the crowd throwing punches and chairs.
Detective Inspector Dave McDougal, of Leeds District CID, said: "These were really ugly scenes that put people in fear and ruined this event for the majority that were there to enjoy a night out.
"The behaviour that was witnessed was completely unacceptable and we are continuing to carry out a thorough and comprehensive investigation to identify all those that were involved."
Detectives are currently carrying out extensive enquiries, including analysis of CCTV footage, to identify those involved in the incident.
It resulted in two men and a woman being treated at hospital for minor injuries.
The club has also said it will no longer take bookings for white collar boxing events at its venue.
Det Insp McDougal said: "We are working closely with Leeds United and going through CCTV footage of the incident and expect to make arrests as the investigation progresses.
"We are, however, still very keen to hear from anyone with information that could assist the investigation.
"We would like to hear from anyone who knows the identities of those involved or who has any images or footage from the evening that could assist us."
Anyone with information is asked to contact Leeds District CID via 101, quoting Operation Deerpond of log number 1843 of February 18.
Information can also be shared with the independent charity Crimestoppers anonymously on 0800 555 111.