Police and emergency services crews conducted a search around Herons Creek and Kendall this week, while the coronial inquest into the suspected death of William Tyrrell continues in Taree.
Crews from NSW SES and NSW Police were seen searching a sawmill at Herons Creek on Tuesday, August 20.
The Port News sought comment from NSW Police in relation to the search which commenced at the start of this week in the Kendall and Herons Creek area.
NSW Police would not comment on what sparked the search and what they are endeavoring to uncover while the coronial inquest into William's disappearance on September 12, 2014 continues.
The third round of week-long hearings continued in Taree on Wednesday, August 21.
All of the evidence collected by Strike Force Rosann is being presented before Deputy State Coroner Harriet Grahame who will determine if the three-year-old did succumb to the rugged bushland around his grandmother's home, or was abducted by someone.
At Wednesday's hearing, the inquest heard from former Laurieton resident and hairdressing business owner Angela Eschler.
Counsel assisting the coroner Gerard Craddock questioned Ms Eschler about her whereabouts on the day William disappeared.
"You recall on the twelfth of September 2014 that William Tyrrell disappeared from Kendall," Mr Craddock said.
"Yes I do," Ms Eschler replied.
The inquest heard Ms Eschler attended a school assembly at Laurieton Public School on the day William went missing.
During questioning, Ms Eschler was unable to say that she remembered seeing person of interest Bill Spedding at the assembly, or other school staff members, but she did remember the song Hallelujah being sung as it was "very emotional".
On Tuesday, August 20 former journalist and Laurieton resident Gordon Wiegold was also questioned by Mr Craddock about attending assemblies at Laurieton Public School.
Mr Wiegold said he remembered being at an assembly where Hallelujah was sung. He also remembered Mr Spedding being at an assembly.
However, Mr Wiegold could not confirm to Mr Craddock if the assembly where the song was sung and when Mr Spedding was present was the same assembly.
On Monday, August 19 Mr Craddock questioned Detective Sergeant Laura Beacroft over the use of the term "persons of interest".
Det Sgt Beacroft confirmed Mr Craddock's comments that a person of interest could include those not necessarily suspected of committing a crime, such as family members, residents and people who might have been in the area at the time William disappeared.
A $1 million reward remains in place for information leading to the return or recovery of William. It is one of the largest rewards offered in NSW history.
The inquest will continue on Thursday, August 22.