Melbourne Sexual Offences and Child Abuse Investigation Team detectives are investigating following a sexual assault at a Melbourne library last month.
Investigators have been told a 20-year-old Melbourne woman was waiting outside the Swanston Street library on Saturday 27 July about 6.30pm.
An unknown male offender approached her, struck up a conversation and asked to give her a massage before sexually assaulting her.
Shortly afterwards the man said he needed to catch a train from Melbourne Central Railway Station and left the scene in an unknown direction.
The man is perceived to be of Indian Sub-Continental appearance, aged in his mid-20s to early 30s with a solid build, brown or black curly hair and dark coloured eyes.
He was wearing a red hooded jumper, dark pants, light-coloured sneakers and a watch at the time.
Detectives have released images of a man who they believe may be able to assist with their investigation.
Anyone who recognises the man or with any information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au