Police are appealing for a key witness to come forward following an alleged late night sexual assault.

A female victim was reportedly sexually assaulted by an unknown man between 12.30am and 1.30am on Friday, August 7, in the area of Smeaton’s Pier in St Ives.

Officers are asking for witnesses to get in contact, in particular a man who was reportedly seen in the area at that time and may have seen the incident.

They have described him as a potential "key witness" who may be able to help their enquiries.

An 18-year-old man from St Ives was arrested on suspicion of sexual assault and has been released under investigation.

Anyone with information is asked to contact police by emailing 101@dc.police.uk quoting reference number CR/066252/20.