NSW Police have confirmed a new series of searches of the area where missing boy William Tyrrell disappeared seven years ago will take place.

Detective chief superintendent Darren Bennett said the “high intensity” searches would involve hundreds of officers and will last two to three weeks, with some searches being “subterranean”.

He also specified that the searches would involve “specialist assistance” and new technologies, and insisted that the series of searches were facilitated by fresh information.

“It’s highly likely that if we found something it would be a body,” Bennett told reporters on Monday.

“We are looking for the remains of William Tyrrell, there’s no doubt about that.”

The searches will take place in three sites near the town of Kendall where the three-year-old went missing from his foster grandmother’s home in 2014.

“I don’t know who took William but we are hoping to find out through this investigation,” he said.

An inquest in the NSW Coroners Court, which has not yet delivered findings, has examined William’s disappearance and suspected death.

A $1 million reward is in place for anyone who shares valuable information that leads to William being found.

Image credits: NSW Police / PR Image