Police are investigating the attempted robbery of a man aboard an Illawarra train last night.
The 25-year-old victim was on a southbound train, travelling between Coniston and Unanderra, about 10.15pm when he was approached by another passenger.
The passenger threatened the victim with a knife and demanding he hand over money, according to police.
The 25-year-old refused and when the train stopped at Unanderra, he got off the train.
Lake Illawarra police are investigating the incident.
They are searching for a male aged in his late teens or early 20s, of Pacific Islander/Maori appearance with a solid build.
Anyone with information about this incident should call Lake Illawarra Police or Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page www1.police.nsw.gov.au.