Photo: vicpolicenews

Investigators have been told a woman was walking east along Union Street about 6.45am on 21 March when a man stepped out from between two parked cars.

The man exposed himself and made obscene gestures to the woman while walking towards her, before she ran away.

Investigators have released a composite image of a man they believe may be able to assist with their enquiries.

The man is described as about 182cm tall with a medium build and aged in his 20s.

He was wearing a beige baseball cap backwards, green hi-vis fleece top, brown work boots and cargo work shorts.

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