On the second day of renewed efforts to locate four-year-old Gus Lamont, search teams have yet to find any evidence of his whereabouts.

In their quest to find Gus, Australian soldiers, police, and SES volunteers have been covering distances of 20 to 25 kilometers daily, braving the challenging outback heat.

Forecasts predict that extreme heat and strong winds will complicate tomorrow’s search, prompting teams to begin at sunrise and cease operations by midday.

Gus was last seen around 5 p.m. on Saturday, September 27, at his family’s Oak Park Station homestead, located in the remote region of South Australia, approximately 40 kilometers south of Yunta.

In a renewed effort to solve Gus’s disappearance, police and Australian Defence Force personnel have returned to outback South Australia, launching Taskforce Horizon after an initial six-day search yielded no results.

No evidence was uncovered during yesterday’s efforts either, police said.

The search has now extended to zones outside of the original search area.

It is expected extreme heat conditions tomorrow afternoon may restrict the search, police said.

Temperatures are forecast to reach tops of 36 degrees in the Yunta area tomorrow.

Officers and soldiers will continue the search during the cooler morning period.

The temperature reached a top of 30 today.

Eighteen police officers, 84 ADF personnel, 33 cars, SES resources, drones and utility terrain vehicles are being used are to scour the remote terrain in SA’s mid-north.

SA Police Commissioner Grant Stevens said yesterday no stone would be left unturned in the search for Gus.

“We are dedicated to making sure we do everything we possibly can to bring Gus back to his family,” Stevens said.

The fresh search was not triggered by any new information, Stevens said.

“We are looking for up to two days but there will be a continual reassessment,” Stevens said.

“The resources that we’re deploying may change over time and the use of specialist drones will be another consideration as we move forward as well.”

The search area covered so far has been around 470 square kilometres.

Stevens emphasised the sheer magnitude of the search area and said it was like combing through “100 Adelaide CBDs”.

“We are searching in quite unusual terrain, it is a significant effort,” he said.

“We’re exhausting every opportunity to recover Gus.”

Taskforce Horizon consists of 12 specialists who will analyse information and suggest different areas to search.

Stevens told reporters there is nothing to suggest foul play in Gus’ disappearance.

Police have received more than 150 Crime Stoppers tips since Gus went missing, but warn online speculation has been hurtful to Gus’ family.

His family have said in a statement they are “devastated” and “deeply distressed” by his disappearance.

“I would describe them as stoic,” Stevens added.

“But you can imagine just how they are feelings, without having Gus and without having answers to exactly where Gus is and what’s happened to him.

“This would be traumatic for any family.”