Nottinghamshire Police have launched a witness appeal after an 18-year-old was arrested on suspicion of rape.
The man was detained after a woman in her late teens reported an attack at Digby Park, Mapperley that occurred on April 16.
The incident was reported to police on May 2, 2023, and the suspect was arrested the same day.
The detainee was later bailed, pending further inquiries.
Nottinghamshire Police detectives are looking for witnesses who may have information that can assist the inquiry.
Detective Constable Liam Cowan, who is leading the investigation, said: “This was an extremely upsetting ordeal for the victim and specially trained officers are supporting her.
“Although we have made an arrest, our investigation continues and I would urge anyone with information to please come forward.
“The incident happened on a bench near to the basketball court between 9pm and 9.30pm on 16 April 2023. Did you see anything? If so, please call 101 quoting crime number 23*264790.
“Alternatively call Crimestoppers anonymously on 0800 555 111.”