A bobcat excavator is being used to dig up a rural Queensland property in the search for the bodies of babies believed buried there.
About 20 police and forensic experts are searching a rental property near Gin Gin, west of Bundaberg, after police said they believed babies had been born in secret and disposed of there.
Police have said they are focused on one family that lived at the property in the late 1990s and early 2000s.
Officers won't say how many babies they are looking for.
Homicide detectives are among those involved in the investigation, with excavation work expected to take a couple more days.
Detective Inspector Mick Dowie, of the Cold Case Homicide Unit, has said a tip-off sparked the investigation.
"You can draw your own conclusions from the fact that we're doing an excavation," he has told reporters.