William Tyrell was last seen in the Mid North Coast town of Kendall on September 12.
William Tyrell was last seen in the Mid North Coast town of Kendall on September 12.

$1 million reward offered in search for William Tyrrell

NSW Police have offered a $1 million reward to find missing child William Tyrrell on the second anniversary of his disappearance - the biggest reward in the state's history.

Detective Inspector Gary Jubelin said the reward was an effort to "flush out" the boy's kidnapper and give anyone harbouring information "one million reasons to betray" the culprit.

He said Crime Stoppers had received more than 2800 pieces of information from the public, 100 more had been made directly to Strike Force Rosann and 178 sightings of William had been reported.

Police have been sorting through 11,000 separate pieces of information, 628 exhibits and now had 690 persons of interest.

"I'm confident in saying it's only a matter of time before we find out what happened to William," Det Insp Jubelin said.

"And if we come to you, the offer is off the table."

The majority of rewards police offer are dependent on the suspect being arrested. This one has an extra clause making it dependent on William's recovery.

Det Insp Jubelin said the search was the biggest investigation in state policing history, and extra officers from the armed hold up, sex crimes squads and local commands had been brought on board.

He urged the public "don't waste our time with clairvoyants or dreams" and only to report information that could help find the missing boy.

Going to the police would negate any crime committed by harbouring information, and police could protect identities, he said.

Premier Mike Baird hoped the record $1 million reward would help bring William home, following his disappearance as a three-year-old from Kendall two years ago.

"It is an incredibly difficult thing to watch as a parent," he said. -ARM NEWSDESK