Newborn found dead on Melbourne footpath

The body of a newborn baby has been found on a footpath in Melbourne's west.

The homicide squad is investigating the discovery and a woman, 18, of St Albans, is assisting police with their inquiries.

A family member reported the death to police about 3pm on Thursday (AEDT).

Officers attended attended a property in Ruth Street, St Albans, and found the newborn's body on a nearby footpath.

Police said the exact circumstances surrounding the death were unknown and a post mortem was expected to be conducted on Thursday night.

Investigators want to hear from anyone who saw unusual activity in the Ruth Street area during the past week to contact Crime Stoppers on 1800 333 000.