Gus Lamont missing six months as grandmother hopes answers emerge in South Australia Major Crime probe

Gus Lamont’s grandmother says the family is still hoping crucial information will come to light, six months after the four-year-old went missing from a remote South Australia property.

On the eve of the sombre milestone, Gus’ grandmother Shannon Murray said she remained hopeful answers would emerge as the investigation continues.

“(Shannon) is still supporting Josie, co-operating through her solicitors and hoping to find Gus, (and) hoping that some information comes to light soon,” her lawyer Casey Isaacs said.

Tragically, despite months of dedicated efforts from police, SES and specialist search crews, investigators remain unable to determine what happened to the young boy.

Despite extensive searches across the vast outback landscape, Gus — or his remains — has not been located.

Gus was last seen on September 27, 2025, at Oak Park Station near Yunta, where he had been playing outside at about 5pm.

When his grandmother attempted to call him inside about 30 minutes later, he had disappeared. After several hours searching the 60,000-hectare property, the family contacted police, triggering a major search operation involving specialist officers, First Nations trackers, drones and aerial support.

Authorities have since carried out multiple large-scale searches, including draining a dam, examining mine shafts and combing surrounding areas.

In the weeks following his disappearance, a 94 sq km radius around the property was searched by emergency services, SES crews, the ADF and volunteers, supported by helicopters and drone technology. Despite repeated efforts, no trace of Gus has been found.

Police later conducted a renewed search of Oak Park Station after heavy rainfall was expected to create “new opportunities” for investigators. Task Force Horizon officers examined several locations but confirmed the operation did not uncover any fresh evidence, though further search activity has not been ruled out.

Investigators have followed multiple lines of inquiry and, in February, confirmed they no longer believed Gus had simply wandered away or been abducted.

The case was elevated to a major crime investigation, with police identifying a person known to the family as a suspect, while confirming Gus’ parents were not under suspicion.

Police have previously said they believe Gus was most likely killed, either accidentally or deliberately, by someone known to him.

Investigators have also confirmed a person who lived at Oak Park Station is an official suspect, though no arrests have been made and no charges have been laid.

Detective Superintendent Darren Fielke said investigators had reached a shocking development.

“We are still working with Gus’ mum and dad and there are other members of the family who are no longer co-operating.”

Police have confirmed two family members are communicating only through legal representatives as inquiries continue.

One of Gus’ grandmothers, Shannon Murray, has retained prominent Adelaide defence lawyer Casey Isaacs, while another grandparent, Josie Murray, has engaged criminal lawyer Andrew Ey, The Advertiser reported.

Seeking legal representation is not uncommon in complex investigations where individuals may be considered witnesses.

SA Police say Task Force Horizon remains dedicated to the investigation and has not ruled out returning to Oak Park Station as inquiries continue.

Police confirmed investigators are continuing to communicate with two individuals linked to the property through their legal representatives.

Authorities also revealed Crime Stoppers has received more than 500 reports from members of the public since Gus disappeared.

In a statement issued earlier this year, Gus’ parents spoke of the ongoing anguish caused by his disappearance and urged anyone with information to come forward.

“Our lives have been shattered, and every moment without him is unbearable.

“We know someone out there may have information. If someone knows what happened, we are pleading with that person – or anyone who may have seen or heard anything – to please come forward.

“All we want is to bring Gus home and understand what happened to our beautiful boy.”

Anyone with information is urged to contact Crime Stoppers.

Crime Stoppers: 1800 333 000.