Police hunt man over 1981 sexual assault

A computer-generated image of a man wanted over a 1981 sexual assault of a Melbourne woman has been released as part of a police appeal for help from the public.

The woman, who was 23 years old at the time, got into a car with the unknown man in St Kilda sometime in February 42 years ago.

The man drove to Horry Lane in Elwood where he sexually assaulted her, investigators have been told.

She left the car and asked for help from the residents of a nearby house and told them what had happened as they drove her back to her hotel.

The sexual assault was recently reported to police and investigators want to speak to the residents after attempts to track them down failed.

At the time of the attack, the offender was described as white, in his 20s with a round face, medium build and brown hair in a short pageboy-style haircut.