Police are investigating a line of inquiry in the disappearance of William Tyrrell that includes an alleged paedophile ring.
The revelation came on the same morning police released an emotional video of William's parents asking for him to be returned to a public place.
His parents, who can't be named or identified for legal reasons, also asked for any one with information on their son to come forward.
Homicide commander Mick Willing said police were "vigorously pursuing" the "specific information" that was recently received about an alleged paedophile ring operating in the area where William disappeared.
Further searches have taken place recently, Superintendent Willing said, but refused to be drawn on whether police had located specific items of William's including the Spiderman suit he was wearing on September 12 last year.
Supt Willing also praised the missing toddler's parents for speaking out.
Anyone with information about William’s disappearance is urged to come forward via Crime Stoppers. Police are urging anyone with information in relation to this incident to call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page.
The mother of missing toddler William Tyrrell says she has a vision in her head that somebody "reached over and ... has gone 'clump' on his shoulders, picked him up and moved him on ... because ... that's the only way ... to explain for him not to be there".
The toddler's parents say they cannot live not knowing where he is or what has happened to him in their first public interview since he vanished last September.
"We need to know where he is and we need to know what happened to him .... 'cause we can't live forever... like this," his mother said. "His sister can't grow up never knowing what happened to her brother."
William's mother says she always suspected her three-year-old was abducted and had not simply wandered off from the yard of his grandmother's Kendall home about seven months ago.
"If somebody has him and if he is alive ... I want him to be safe, I want him to be feeling loved and I want someone to be looking after him ... because to imagine that something else is going on ... we can't live a life like that," his mother said.
You just can't take children ... he's three! He's three years old, he's only lived for three years, it's ridiculous.
The plea from William's parents, who cannot be named or identified for legal reasons, comes ahead of a fresh appeal from police on Friday for information into William's disappearance. on September 12.
"I thought that immediately," his mother said. " I had a vision in my head, somebody...I can't explain it. "
She said she was horrified that someone could just have taken her son. "You just can't take children ... he's three! He's three years old, he's only lived for three years, it's ridiculous ... he hasn't gone to school. He's reached none of those milestones that we all take for granted."
His mother's desperate plea to bring her baby home came after hundreds of police and volunteers failed to find any trace of the toddler within a 10-kilometre radius of his grandmother's Benaroon Drive home.
Homicide police are leading the investigation and believe the toddler was abducted in his favourite Spider-Man suit.
In January police raided the Bonny Hills home and Laurieton office of whitegoods repairman Bill Spedding after he was due to fix a washing machine at William's grandmother's home the week he disappeared.
Police seized a laptop and mattress from Mr Spedding's office, excavated his front yard and drained a septic tank but have repeatedly said the businessman was not a suspect but a "person of interest". Mr Spedding has denied any involvement.
Fairfax Media understands a three-day search of bushland in early March was instigated after a witness reported seeing a vehicle drive down a fire trail about the time William disappeared. The search zone was 21 kilometres from where the toddler disappeared.
Head of the homicide squad, Detective Superintendent Michael Willing, said anyone who has information on William's disappearance should listen to his mother's plea and do the right thing and come forward.
"They have laid bare their feelings in a heart-wrenching plea for the community's help and are doing everything in their power to seek the safe return of their little boy." Detective Superintendent Willing said.
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