Harrogate police are investigating the sex attack in Valley Gardens, Harrogate, in the early hours of 16 February 2016 against a 14-year-old girl.
The man who was arrested in connection with the incident has been released on bail while police enquiries continue.
The investigation remains ongoing and anyone who has any information is urged to contact North Yorkshire Police on 101 and quote incident number 12160028307.
You can also contact Crimestoppers anonymously on 0800 555 111.