Police are investigating following a sexual assault at a licensed premises in the Melbourne CBD in earlier this year.
Investigators have been told a group of unknown men attended the Lonsdale Street venue in the early hours of 17 August.
A woman was talking to the group when one of the men sexually assaulted the 23-year-old about 12.45am.
Investigators have released an image of the man who they believe may be able to assist with their enquiries.
He is perceived to be of Indian or sub-continental appearance and was wearing a puffer-style jacket and jeans.
Anyone with any information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.