Lincolnshire Police are hoping people will be able to help identify men who started a brawl in a Lincoln bar.
The incident happened on May 6 at Jailhouse Rock just off Silver Street, Lincoln. However, everyone fled the scene before police arrived.
Despite expansive enquires by the police, the men involved have not yet been found.
On the night, six men dressed in drag visited the bar, and started talking to another group of men around the same size.
An argument broke out and one of them men smashed a chair over the head of a man in drag. A fight followed.
Police believe no one suffered any serious injuries.
Anyone who recognises either of the men or think they witnesses the violent incident should call PC Les Robinson on 0300 111 0300.