William Tyrrell’s foster mother has urged police to release the evidence they claim to have against her, after reports police have recommended her prosecution over the three-year-old’s 2014 disappearance.

It follows reports that, according to a brief sent to the NSW Director of Public Prosecutions, police believe the woman might have disposed of William’s body following a fatal accident at a property in Kendall, on the NSW mid-north coast.

Police have recommended she be charged with perverting the course of justice and interfering with a corpse, multiple media outlets have reported.

A decision on any charges is yet to be made.

William has not been seen since vanishing from the home of his foster grandmother in Kendall in September 2014. The little boy, who would have turned 12 on Monday, is presumed dead.

On Wednesday, William’s foster mother, who is in her late 50s and cannot be named for legal reasons, broke her silence on the case for the first time. Speaking through her solicitor Sharon Ramsden in a statement to the media, she called on police to disclose the evidence against her.

“The foster mother and her legal representatives call for disclosure of the evidence which police suggest forms the basis of any criminal proceedings,” her statement read.

“The foster mother has always, and maintains, she has nothing to do with William’s disappearance. She desperately urges the police to resume the investigation into finding out what happened to William.”

The woman was acquitted last year of lying to the NSW Crime Commission about hitting a different child with a wooden spoon.

The charge was unrelated to William’s disappearance, which has been the subject of sustained efforts by police to find answers.

Her statement on Wednesday noted she was previously ruled out as a suspect in the nine-year-long investigation.

The foster mother has never been charged for William’s death and there is no suggestion of her guilt.

“William’s foster mother and her legal representatives urge the Director of Public Prosecutions to expeditiously determine whether charges are to be laid,” her statement on Wednesday said.

The foster mother was acquitted on charges relating to another child last year. Photo: AAP

Ms Ramsden told The Sydney Morning Herald that police had not advised her of any submission to the DPP. She said on Wednesday she had written to seek confirmation.

The case of the boy who went missing in a Spider-Man suit has gripped the nation for nearly nine years.

During a court hearing last November over the lying charge, a senior NSW detective said he believed the foster mother had knowledge of William’s whereabouts.

“I have formed the view [she] knows where William Tyrrell is,” Detective Sergeant Andrew Lonergan told Downing Centre Local Court at the time.

The woman’s barrister, John Stratton SC, suggested police had charged her for allegedly lying in an attempt to pressure her.

“You are hoping to break her spirit,” Mr Stratton said.

“Our main objective is to find out where William Tyrrell is,” Detective Sergeant Lonergan said.

In December 2020, a highly-publicised month-long search of the Kendall property and surrounding area failed to find any trace of the missing boy.

Police dug up a garden at the property, which belonged to William’s foster grandmother, and examined a concrete slab laid after his disappearance.

They also drained a nearby creek and sifted through soil in bushland and around the home.

A $1 million reward for information leading to the recovery of William and the circumstances surrounding his disappearance was announced in 2016.

The Office of the Director of Public Prosecutions has declined to comment on the reports.

NSW Police has released only a brief statement.

“There are no updates in relation to this matter. The investigation is ongoing,” it said.

-with AAP