Melbourne Sexual Offences and Child Abuse Investigation Team detectives are appealing for public assistance after a man performed an explicit sexual act towards a woman in Melbourne's CBD last month.
Investigators have been told a 23-year-old woman was using a gym at an apartment complex on Elizabeth Street about 7.30am on Thursday, 27 May.
While the woman was exercising, she noticed a man standing in an adjacent public carpark on Franklin Street.
The man performed an explicit sexual act for some time while looking at the woman before exiting the carpark via a lift.
He then left the building on foot through the lobby area.
Detectives have today released CCTV footage and an image of a man who they believe can assist with their enquiries.
The man is perceived to be Caucasian in appearance, aged 25-35 years, unshaven and was wearing a grey jacket, grey shorts and a black beanie.
Anyone who recognises the man or has information regarding the incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au