Two men have been arrested on suspicion of serious sexual assault in York city centre.
The incident occurred in the Bootham and Marygate area at around 10pm on Sunday.
The victim, a local woman, is receiving specialist support while enquiries continue.
The arrested men, both from York, are being held in custody for questioning.
An area on Bootham next to St Mary’s Tower, which sits on the junction with Marygate, has been taped off and is being guarded by a police officer
Witnesses or anyone with information that could assist the investigation, are urged to call North Yorkshire Police.