Police are appealing for the public's help to find a missing woman and a 10-week-old baby.
Jessica Nettle was last seen with the newborn in Mandurah on November 4.
Police hold serious concerns for their welfare.
Anyone who sights Jessica or the baby is asked to contact police immediately on 131 444.
Information regarding her whereabouts can also be provided via Crime Stoppers, on 1800 333 000 or report online at crimestopperswa.com.au.