Police are looking for a man who sexually assaulted an unconscious woman in Melbourne's north late last year.
Victoria Police said the woman, 30, was dropped off by a rideshare driver near her home in Reservoir just before 2am on December 4.
The woman lost consciousness and woke up inside an unknown unit nearby to find a man sexually assaulting her.
She pushed the man off and walked home before calling police.
The incident is being investigated by the Mernda Sexual Offences and Child Abuse Investigation Team.
Police said it was unclear how the woman was moved from the nature strip where she had passed out to the nearby unit.
Investigators said the unit appeared to be unoccupied and was often used by squatters and multiple unknown people.
The rideshare driver has been identified and ruled out as a suspect.
Police have released a computer-generated image of a man they want to talk to about the assault.
He was perceived to be of Middle Eastern appearance, aged 50–60, with dark hair, olive skin, a thin build and was clean-shaven.
Anyone who can identify the man or has information has been urged to contact CrimeStoppers on 1800 333 000.