Received

Another search for the remains of three-year-old William Tyrrell on the NSW mid-north coast is yet to turn up answers, as bushland is cleared and potential evidence is combed over again.

Police have dug up the garden at the Kendall home where his foster grandmother lived and where he was last seen in 2014.

A mechanical sift was brought on to the property while in nearby bushland volunteers cut down trees to help in the search.

Police Commissioner Mick Fuller confirmed there had been a significant breakthrough in the case, saying he was confident police would solve the mystery of the boy's fate.

"There is certainly one person in particular that we are looking closely at," he told Sydney radio 2GB on Tuesday.

The case of the boy who went missing in his Spider-Man suit has captured the nation's attention since he disappeared while playing in the garden of his foster grandmother's home.

Police Minister David Elliott Police was asked about a report that police were investigating whether William died after falling from a balcony at the Kendall home.

"With a mysterious incident like this, every single option has to be investigated, every scenario has to be reviewed and tested," he told reporters.

"Let's hope whatever the conclusion is gives closure to the families and community."

Mr Fuller said he didn't want to say too much for fear of compromising the investigation.

"Officers have been working tirelessly to get to this point where we are searching land, again using the best technology available," he said.

"They inherited what was a bit of a mess and have really cleaned up that investigation and they have a clear strategy and one of those is going back to Kendall."

Mr Elliott says that "inherited mess" will probably be subject to an internal police review, but the focus should be "on drawing this matter to a conclusion".

The commissioner and the taskforce had the government's full support, he said.

"Anything that's happened in the past is in the past as far as I'm concerned."

The Law Enforcement Conduct Commission could investigate "if people did the wrong thing" and police would conduct further internal reviews.

"I think something of this magnitude will probably automatically see at least an internal post operation review ... that's appropriate and the least we can offer the family and the community," Mr Elliott said.

Asked earlier about reports police were seeking an apprehended violence order against a person or people of interest in the case, Mr Elliott was reticent to say too much.

"It is a matter of public record that police are issuing AVOs," he told the Seven Network.

"We need to be cautious about how we discuss that in the public domain so smart lawyers don't use our comments to neutralise a conviction."

William's foster family have never been publicly named due to legal reasons.

Ten reporter Lia Harris, who interviewed the foster parents for her 2019 podcast Where's William Tyrrell? said she had recently received a subpoena from the coroner's court for "a very broad range of material".

"Everything that I had uncovered in my research for the podcast, audio files, documents, everything, including those raw tapes of my extensive interviews with the foster parents," she told 2GB on Tuesday

"To me, it signalled that they had either taken a new direction or they had a new theory they were working on."

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.

© AAP 2021

Detectives investigating the disappearance of three-year-old William Tyrrell have returned to the property on the NSW mid-north coast where he went missing seven years ago.

Police are digging up the garden at the Kendall home where his foster grandmother lived and where he was last seen in 2014.

Police Commissioner Mick Fuller said on Tuesday there had been a significant breakthrough in the case and he was confident police would solve the mystery of the boy's fate.

"There is certainly one person in particular that we are looking closely at," he told Sydney radio 2GB.

Police are investigating whether the boy died after falling from a balcony at the Kendall home, The Sydney Morning Herald reports.

It says a police cadaver dog is at the scene and Strike Force Rosann will consult a forensic anthropologist, an archaeologist and a hydrologist in a bid to unearth new evidence in the case.

Mr Fuller said he didn't want to say too much for fear of compromising the investigation.

"Officers have been working tirelessly to get to this point where we are searching land, again using the best technology available," he said.

"They inherited what was a bit of a mess and have really cleaned up that investigation and they have a clear strategy and one of those is going back to Kendall."

The case of the missing boy in the Spider-Man suit has captured the nation's attention since William disappeared from the garden of his foster grandmother's Kendall home in 2014.

On Monday, NSW Police announced they were conducting a new "high intensity" search for William's remains near the property. Police are being helped in the search by 30 SES volunteers.

Volunteers are using chainsaws and other heavy-duty equipment to clear dense bushland, including felling large trees.

Asked about reports police were seeking an apprehended violence order against a person or people of interest in the case, Police Minister David Elliott was reticent to say too much.

"It is a matter of public record that police are issuing AVOs," he told the Seven Network.

"We need to be cautious about how we discuss that in the public domain so smart lawyers don't use our comments to neutralise a conviction."

Earlier, he told the Nine Network it was "a matter of public record that a number of people who had relationships with William have been questioned by police".

William's foster family have never been publicly named due to legal reasons.

Ten reporter Lia Harris, who interviewed the foster parents for her 2019 podcast Where's William Tyrrell? said she had recently received a subpoena from the coroner's court for "a very broad range of material".

"Everything that I had uncovered in my research for the podcast, audio files, documents, everything, including those raw tapes of my extensive interviews with the foster parents," she told 2GB on Tuesday

"To me, it signalled that they had either taken a new direction or they had a new theory they were working on."

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.

© AAP 2021

Detectives investigating the disappearance of three-year-old NSW boy William Tyrrell have narrowed the focus of their seven-year probe to a single suspect.

Police Commissioner Mick Fuller says there has been a significant breakthrough in the case and he's confident police will solve the mystery.

"There is certainly one person in particular that we are looking closely at," he told Sydney radio 2GB on Tuesday.

"I certainly don't want to declare too much because again in these cases you do not want to compromise a potential outcome.

"Officers have been working tirelessly to get to this point where we are searching land, again using the best technology available."

The case of the missing boy in the Spider-Man suit has captured the nation's attention since William disappeared from the garden of his foster grandmother's Kendall home on the NSW mid-north coast in 2014.

On Monday, NSW Police announced they were conducting a new "high intensity" search for William's remains near the Kendall home. Police are being assisted in the search by 30 SES volunteers.

Vision of the search area on Tuesday showed the volunteers using chainsaws and other heavy-duty equipment to clear dense bushland, including felling big trees.

Asked about reports police were seeking an apprehended violence order against a person or persons of interest in the case, Police Minister David Elliott was also reticent to say too much.

"It is a matter of public record that police are issuing AVOs," he told the Seven Network.

"We need to be cautious about how we discuss that in the public domain so smart lawyers don't use our comments to neutralise a conviction."

Earlier, he told the Nine Network it was "a matter of public record that a number of people who had relationships with William have been questioned by police".

William's foster family have never been publicly named due to legal reasons.

Ten reporter Lia Harris, who interviewed the foster parents for her 2019 podcast 'Where's William Tyrrell' said she had recently received a subpoena from the coroner's court for "a very broad range of material".

"Everything that I had uncovered in my research for the podcast, audio files, documents, everything, including those raw tapes of my extensive interviews with the foster parents," she told 2GB on Tuesday

"To me, it signalled that they had either taken a new direction or they had a new theory they were working on."

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.

© AAP 2021