Police are investigating after a Metro staff member was spat on during an incident at Clifton Hill Railway Station earlier this month, Victoria Police say.
It is believed an unknown man spat on the worker while on platform one of the station about 7.55pm on Friday, 21 April.
He then jumped on a city-bound train stopping all stations to Flinders Street.
Investigators have released images of a man they believe may be able to assist with their enquiries.
The man is described as Caucasian, aged in his late 20s to early 30s and approximately 172-177cm tall with a small to medium build.
He had black messy collar-length hair, dark bushy eyebrows and dark stubble.
The man was wearing a green and white trucker cap with unknown black writing on the front, a black jacket, maroon pants and white/red runners with a red Nike tick.
Anyone with information or who recognises the man is urged to contact Crime Stoppers.
