Police officers and cadaver dogs have searched around a mound of dirt underneath William Tyrrell’s foster grandmother’s home.
Detectives returned to the Kendall property, on the NSW Mid North Coast, for the fourth consecutive day on Thursday in a new search for his remains.
William, then aged three, was dressed in a Spider-Man outfit when he vanished while playing in the garden of the home on September 12, 2014.
In vision released by NSW Police, officers could be seen searching around a large mound of dirt underneath the house.
A cadaver dog was also brought in as the mound was examined.
Police did not appear to dig through the dirt.
Earlier on Thursday, officers from the Australian Federal Police Forensic Imagery and Geomatics Team examined a concrete slab in the garage, adjacent to the mound of dirt.
A tool that uses ground-penetrating radar and 3D cameras to analyse the ground was used but no inconsistencies appear to have been detected.
The tool was first used at an area of bushland about a kilometre from the house, where police activity continues.
Meanwhile in nearby bushland, plastic sheets have been laid down in areas where police were digging, in anticipation of rain expected to hit Kendall on Thursday and Friday.
On Monday, NSW Police announced they would launch a new “high intensity” search for William’s remains at three locations near the home after “new evidence” was received.
Officers immediately began digging in areas around the town, with a particular focus on the garden of a Kendall home to investigate a theory William may have fallen to his death from the home’s second storey balcony.
NSW Police revealed on Wednesday they’d seized a car that belonged to the foster grandmother, who has since died.
The grey Mazda was taken from a home in Gymea in Sydney’s south under a coronial order last week and is undergoing extensive forensic examination.
Some 30 to 40 people are helping with the search in Kendall, including officers from the NSW Police and the Australian Federal Police, as well as Rural Fire Service volunteers.
An expert hydrologist and archaeologist are also offering assistance on site.
“The NSW Police will not stop until such time as we’ve investigated every possible lead,” NSW Police Deputy Commissioner Malcolm Lanyon told reporters on Wednesday.
He vowed to “leave no stone unturned” and praised investigators’ “dogged determination” as they continued the search in Kendall, which could take weeks.
The findings of a coronial inquest into William’s disappearance, which concluded last year, are yet to be handed down.
A $1 million reward for information on the case still stands.
– with AAP
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