Transit Crime Investigation Unit detectives are investigating after a man exposed himself in Kensington last year.
It is believed a 29-year-old woman was standing on a train platform on Macauley Road when the man exposed himself to her on Wednesday, 23 October about 11.45am.
The offender fled the scene on foot, last spotted leaving the train station on Macauley Road.
He is described as being Caucasian in appearance, approximately 170cm tall, with a slim build, and dark hair.
He was last seen wearing black and white runners, black tracksuit pants, a white singlet and a blue unzipped hoodie carrying a brown shopping bag.
Detectives have released CCTV images of a man they believe may be able to assist with their enquiries.
Anyone who witnessed the incident or has information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au