Police divers are aiding the investigation into William Tyrell’s disappearance while authorities dig up a new site for potential clues, as the search enters its eleventh day.

Investigators returned to the house where William Tyrrell went missing in 2014 once again, this time to examine two water tanks on the property using a pole-mounted camera. It’s the first time divers have been brought in to assist since the search began.

As police divers enter the search, authorities have begun digging up a new site at a former Kendall riding school where William’s foster mother is believed to have driven to after discovering the toddler had gone missing, as reported by The Daily Mail.

Police had previously scoured the Kendall property where William went missing, digging up the garden below the second-floor balcony and sifting through dirt for any clues on the boy’s disappearance as part of renewed searches that police expect will last for “weeks and weeks”. Cadaver dogs have also been spotted being taken around the area as forensic teams sprayed the chemical luminol around the property to detect any traces of blood that may have been present.

Incoming Police Commissioner Karen Webb told 2GB Radio “there’s no stone being unturned” in the large-scale investigation.

“It’s a long laborious search and obviously the weather conditions up there at the moment are unfavourable. But police will pursue that, no matter what,” she said.

“It’s been seven years now and that’s a long time but we’re not going to give up.”

Police photographed a black piece of fabric on November 21, in the search area and bagged the evidence for further forensic testing along with other pieces of potential evidence. Investigators are also sifting through over 15 tonnes of soil for any clues.

Current NSW Police Commissioner Mick Fuller told ABC News, investigators are currently working through a large amount of potential evidence.

“We have taken 15 tonnes of soil and other pieces of evidence or potential evidence back for forensic investigation,” he said.

“(It’s) particularly challenging weather conditions at the moment but that will continue until investigators believe that the job is done.

“If you think about 15 tonnes of soil being moved into a clandestine lab, there could be weeks and weeks of searching through that before we have any answers.”