The woman is believed to have fled to a nearby building while the man allegedly ran to a nearby silver Mazda sedan.
Police have released a description of a man they believe can assist with their investigation.
The man is described as medium in stature, between 20 and 30 years of age, of Indian descent with a short beard and short black hair.
He was wearing blue jeans, a black jacket and white shoes at the time of the incident and is believed to have been driving a silver Mazda sedan with yellow number plates.
Anyone with information is being urged to contact Crime Stoppers on 1800 333 000.
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