DETECTIVES investigating a sexual assault have arrested a man in his 30s.

The man was released under investigation in the early hours of this morning while enquiries continue.

The investigation was launched after a woman walking along Station Road near the gardens of the Principal Hotel in York city centre was grabbed by a man who sexually assaulted her over her clothing.

The incident took place at around 5.20am on Friday, July 21.

Anyone who has any information about the incident is asked to contact North Yorkshire Police on 101, select option 2 and ask for York Serious Crime Team.

If you wish to remain anonymous you can pass information to Crimestoppers on 0800-555-111.

Please quote incident number 12170128098 when passing on information.