Transit Crime Investigation Unit detectives are today appealing for witnesses at Sunshine Railway Station following a sex assault in November last year.
It is understood the female victim, aged 28 from Bentleigh, was travelling on the Sunbury line towards the city when an unknown male boarded the train at Sunshine Railway Station about 8.15pm on 19 November.
Officers understand that after about 5 minutes, when the train was between Southern Cross Railway Station and Flinders Street Railway Station, the man exposed himself and began masturbating.
The victim 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.
Transit Police and Protective Services Officers are urging anyone who might recognise the man or with any information to come forward and speak with police.
Officers will also be at the concourse area of Sunshine Railway Station between 9am and 11am today (14 January) and are encouraging anyone with information to come forward.
Anyone with information or who recognises the man should contact Crime Stoppers on 1800 333 000.
Quotes attributable to Transit Investigation and Response Inspector Andrew Gustke
“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.
“This kind of behaviour is completely unacceptable, it’s opportunistic and we will do everything we can to ensure we hold the right person to account.
“We’re asking anyone who might recognise this man to come forward to police. We will also be present at Sunshine Railway Station to talk to the community and ensure that people feel safe and are safe.
“If you are ever concerned for your safety, call Triple Zero immediately or speak to a PSO stationed at one of the local public transport hubs if it is available to you.”