NEW South Wales police have relaunched a public appeal for information surrounding a baby who went missing from her mother's Hunter Valley home more than a decade ago.
Leonie Hutchinson, 1, was last seen in Scone in late 2000.
Her whereabouts remain unknown.
Her disappearance has been the subject of two coronial inquests.
A third coronial inquest into her disappearance is scheduled to begin on December 9.
Hunter Valley Local Area Command crime manager Detective Inspector Trent King said police were hopeful of finding out where Leonie is.
"Leonie has been missing for nearly 13 years and while we have some strong leads, and have spoken to people throughout NSW, Victoria and Queensland, we still do not know exactly what happened to her or where she is," he said.
"We are confident that there are a number of people in the community who have information about Leonie's disappearance but have not yet spoken to us.
"Now is the time for these people to come forward.
"Any information, no matter how insignificant it may seem, could provide the breakthrough we need."
Police were not informed of child's disappearance until 2004 and as a result Strike Force Kanuna was established to investigate her disappearance.
All evidence gathered by police will be presented to the Coronial Inquest.