Police are appealing for information to identify a man allegedly seen performing a lewd act near a school at Cabramatta on Friday.
Officers said a member of the public was on Gilmore Street about 2pm a when they reported seeing a man standing by a parked car and performing a sexual act.
The man then fled the scene east along Phelps Street before turning into Bartley Street, Canley Vale.
Cabramatta police were called to the scene and conducted a search of the area but were unable to locate the man.
Investigators have now released a photo of a man who they believe may be able to assist with inquiries.
The man depicted in the image is described as being of Asian appearance, 170 centimetres tall with a thin build, wearing a bright orange t-shirt, shorts and riding a mountain bike.
Anyone who witnessed the incident or has information about the identity and whereabouts of the man depicted in the photograph is asked to contact Cabramatta Police.
Police are urging anyone with information about this incident to call Crime Stoppers, 1800 333 000 or use the online reporting page: https://www.police.nsw.gov.au/.