A computer-generated image of the man police are looking for.

A computer-generated image of the man police are looking for. Photo: Supplied

A woman was sexually assaulted while she waited for a taxi in Melbourne's inner west last weekend, police say.

The 43-year-old victim, from Footscray, was waiting near the corner of Anderson and Birmingham Streets in Yarraville, near the railway station, when a man grabbed her from behind between 1.45am and 2.30am last Sunday.

The man dragged the woman into an alcove and sexually assaulted her, a police spokeswoman said.

The man is described as white with a medium build, dark and brushed-back thick hair. He was believed to be aged in his 40s and was wearing dark-coloured jeans.

Detectives from the Footscray sexual offences and child abuse investigation team want to hear from anyone who may have information about the incident.

They particularly want to speak with a commercial construction worker who spoke to police officers near the taxi rank just after the incident.

Police will have an information caravan set up at the scene from 5pm on Saturday, and have released an image of a man they believe is responsible.
