The New South Wales government announced the largest reward in the state’s history for information that leads to the recovery of missing toddler William Tyrrell.

On the anniversary of the boy’s disappearance from his grandmother’s yard two years ago in Kendall on the NSW mid-north coast, Premier Mike Baird Police Commissioner Andrew Scipione and Chief Inspector Gary Jubelin held a press conference at Manly police station on Monday morning.

A $1 million reward has been offered to find the three year old.

Strike Force Rosnan has reportedly been given information about 600 persons of interest in relation to the case, and extra resources have been assigned to the investigation.

Police have said the three-year-old could have been the target of a pedophile ring in the north coast region.

William, dressed in his favourite Spiderman suit, was last seen playing in the front yard of a house 

Washing machine repairman William “Bill” Spedding has been the most high-profile person to be questioned during the years-long investigation.

The 65-year-old has strenuously denied any involvement in William’s disappearance and has not been arrested or charged in relation to the case.

“It’s an incredibly difficult thing to watch as a parent.” Chief Inspector Gary Jubelin. Photo: AAP.

Chief Inspector Jubelin said the police decided on the reward to “bring back William to his family, to his community”.

“Those million dollars, we hope, encourages anyone with any information to come forward,” he said.

“To come forward to reunite William with his family. It’s an incredibly difficult thing to watch as a parent, every parent across the nation sits and is absolutely in a sense of deep grief with that family as we any about these terrible, terrible circumstances.”

The case has been referred to the NSW coroner but police say investigations continue with the hope the young boy is still alive.