Police divers scour water tanks at William Tyrrell house

The divers are inspecting an underground water tank at the front of the property, and another above ground tank.

Police divers at the property from which William Tyrrell disappeared. Picture: Liam Mendes

Police divers inspected two water tanks at the house where William Tyrrell disappeared, as the renewed search for the missing boy entered its 10th day.

The officers used a camera and light attached to a pole to ­inspect an above-ground water tank at the front of the property and an underground tank in a nearby garden, both of which have previously been searched by police.

Police at the scene in Kendall. Picture: Liam Mendes

The specialist team, which ­arrived in the NSW mid-north coast town of Kendall on Wednesday, is expected to assist at the main search area on Thursday.

William was last seen at the house, then owned by his foster grandmother, during a visit with his foster parents in 2014.

The property has been sold twice since William’s disappearance.

The team has not previously taken part in the extensive search, which has so far focused on bushland about 1km from the property.

Police made one further discovery on Wednesday afternoon, bagging an unidentified object, bringing the total to 14 items over 10 days.

Missing boy William Tyrrell. Picture: NSW Police

On Wednesday morning members of the Rural Fire Service, who are clearing the search areas in advance, began draining a creek which had been previously drained.

At the end of a creek is a dam on a nearby property – which isn’t in the official search area.

It is understood police are searching for William’s remains in the belief that he was placed in the bush rather than buried in a grave.

Wags the cadaver dog is now operating in a fresh location that was cleared by RFS workers on Monday.

Officers from the Public Order Riot Squad and ­Operational Support Group are on site, sifting through soil under the instruction of forensic ­experts, eight crime scene officers, a ­forensic grave archaeologist, an anthropologist and a ­hydrologist.