A man was punched on the dancefloor of a York nightclub.
The assault took place inside Kuda on Clifford Street on Wednesday 15 August at around 1.20am.
One man punched another man in the face, leaving the victim with a black eye.
Officers are asking members of the public to contact police if they recognise the man in the image, as they believe he will have information that will help the investigation.
Anyone with any information is asked to contact North Yorkshire Police.
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