A man suffered a large cut to his head in a fight outside a nightclub.
The 22-year-old was taken to hospital following the incident outside Moko Lounge, on King’s Road in Harrogate, in the early hours of December 5.
Police said a group of up to eight people, possibly including women, were involved in the brawl.
Two men aged 24 and 18, from Harrogate, were arrested following the incident and released on bail pending further enquiries.
Officers said they had already spoken to several people who were in the club at the time.
But they are appealing for any other witnesses or people with information to contact them.
Any witnesses or anyone who can help should call North Yorkshire Police on 101, select option two and ask for Harrogate CID or call Crimestoppers, anonymously, on 0800 555111.