Police are appealing for witnesses to a sexual assault that occured on a train on the Sunbury line in November.
Police believe the victim was travelling towards the city when an unknown male boarded the train at Sunshine Railway Station about 8.15pm on November 19.
It’s alleged the man exposed himself and began performing a lewd act while on the train.
The victim, a 23-year-old Bentleigh woman, left the train at Flinders Street Station, as did the male, and he appeared to follow her up the escalator.
Once the pair were at the concourse area of Flinders Street Station, the victim continued walking and the male loitered in the concourse area before briefly leaving the station at the Federation Square exit.
He returned a short time later and boarded a train to Southern Cross Railway Station where he exited, walking west along Collins Street about 8.55pm.
He is described as slim with a muscular build and short dark hair.
At the time of the incident he was wearing a black singlet top, beige cargo pants, beige boots and carrying a black bag.
Police are urging anyone who might recognise the man or with any information to come forward.
Transit investigation and response Inspector Andrew Gustke said that this type of behaviour is unacceptable.
“Everyone has the right to go about their day without being impacted by crime or violence on their commute, and we want to reassure the community that we take these reports very seriously,” he said.
“We’re asking anyone who might recognise this man to come forward to police.
“If you are ever concerned for your safety, call triple-0 immediately or speak to a PSO stationed at one of the local public transport hubs if it is available to you.”
Anyone with information or who recognises the man should contact Crime Stoppers on 1800 333 000.