Search teams and cadaver dogs will now return to the main, larger search area near William's grandmother's home from where the toddler disappeared in September 2014.
The tiny community has been urged to cast a suspicious eye over family members,
friends and neighbours as pressure mounts to solve the mystery.
Detective Chief Inspector Gary Jubelin earlier this week announced the investigation had zoned in on a second small patch of bushland about four kilometres from the home.
A supplied image of missing three-year-old William Tyrell. Source: AAP
On Friday he confirmed police had completed the second search at Batar Creek without finding specific evidence - but new leads had emerged.
"While we have not located evidence of William being in this location, investigators have gained information from the search," he said in a statement.
AAP understands the new information did not come from within the search zone itself but was uncovered in the last few days. It was not a tip-off from the public.
The swarming police presence around the town is designed to put "pressure" on a person in the Kendall surrounds who has held back information from investigators.
"There is a person out there who knows why we are searching this area and will no doubt be feeling pressure from the intensity of the investigation," Det Insp Jubelin said.
He urged people to be aware of other peoples' behaviour in case they begin to crack under the scrutiny.
"I would encourage them to come forward with any information they have - William's family need answers as to what happened to their little boy."
The main search is expected to last for another week and a half.
NSW Detective Chief Inspector Gary Jubelin. Source: AAP
