8AM: Police are emptying a septic tank at a Bonny Hills home as they continue to seize forensic evidence in relation to the disappearance of toddler William Tyrell.
Homicide detectives have spent more than 24 hours searching through a Bonny Hills home, just south of Port Macquarie.
Officers have cordoned off the semi-rural property, and a grease trap and septic service truck pulled up to the house about 8am on Wednesday.
Detectives were instructing a man and he was later seen putting a large hose into the ground near the front of the single level home.
5AM: TWO properties have been raided by police on the New South Wales Mid North Coast in relation to the disappearance of missing boy William Tyrell.
Homicide Squad detectives have also interviewed a number of people more than four months after the three-year-old vanished from outside his grandparent's Benaroon Dr home in Kendall.
Police are understood to have seized computer equipment and a single mattress from a Laurieton unit for forensic analysis.
These latest raids come as investigators follow leads into the likelihood William was abducted.
"Police are conducting inquiries and are speaking with a number of people as the search for William Tyrell continues," police confirmed.
William was last seen wearing his favourite Spiderman suit on September 12, as he played in the front yard of the home.
His family had just arrived on the Mid North Coast after driving from Sydney.
Within five minutes William was gone.
Family and neighbours began the initial search.
Then more than 70 volunteers joined police searching for any sign of the youngster.
The investigation involves Homicide Squad detectives, Sex Crimes Squad detectives and Mid North Coast Police.
Mid North Coast Superintendent Paul Fehon, who has overseen the case, said in November that police were investigating the possibility of 'human intervention' in William's disappearance.