Transit Crime Investigation Unit detectives are investigating a sexual assault which occurred on a bus in Heidelberg Heights earlier this month.
Investigators have been told a girl was travelling on a bus near Waterdale Road about 3.50pm on Friday 3 November.
As she prepared to exit the bus she was sexually assaulted by a man who had been sitting near her.
She got off the bus and investigators have determined that the man exited the bus in Ivanhoe and was last seen on Upper Heidelberg Road.
Investigators have released images and CCTV footage of a man they believe may be able to assist them with their enquiries.
He is perceived to be Caucasian, 60-70-years-old with a medium build.
The man was last seen wearing reading glasses, a black beanie, light coloured pants, grey and black hooded top and was carrying a dark blue and red tote bag.
Anyone who recognises the man or has information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au
