Detectives investigating a brawl outside a nightclub which left five people injured and in hospital are appealing for people to come forward with information.
And they believe people from Huddersfield may be key witnesses.
Police have released CCTV images of three men and two woman following the serious disturbance on the street outside Club C’s on Sackville Street in Bradford on May 26.
A Huddersfield man and five men from Leeds have since been charged with a range of offences in connection with the incident.
A further Huddersfield man and two people from Leeds have also been arrested and released on bail.
The disorder broke out and it's believed a number of weapons were used.
The nightclub has since closed voluntarily after police applied to have its licence revoked and described it as a “nucleus” for violent disorder in the town.
It is now up for sale.
Det Sgt Stuart Lyons, of Bradford District CID, said: “We are urging these people to come forward and tell us what they know about the disorder in Sackville Street, as they may have information which could be vital to our investigation.
“Similarly, we would also ask for anyone who might be able to identify these people in the images , or anyone who might have further information about the incident, to contact police on 101 or anonymously to Crimestoppers on 0800 555111.”
The Huddersfield man who has been charged is Marcus Kaye, 20, of North Carr, Rawthorpe, who has been accused of violent disorder, wounding and robbery.
A 28-year-old Huddersfield man was also arrested and has been bailed.
Kaye will appear at Bradford Crown Court with the other five defendants from Leeds on July 25.
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