Photo: heraldsun.com.au

Investigators have been told the 19-year-old woman was at the Chapel Street venue when she was sexually assaulted by an unknown man near the front bar area sometime between 2am and 3am on Saturday 26 November.

The man left the nightclub shortly after and was seen walking along Chapel Street towards Windsor.

Police have released the below images of a man who they believe may be able to assist with their enquiries.

The man is described as being tall with a medium build, light brown hair and light-coloured eyes.

He was wearing a white v-neck t-shirt, dark-coloured jeans and black runners.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report to www.crimestoppersvic.com.au.