A major new operation is underway as police search for Gus Lamont, the missing four-year-old last seen in September, 2025.

On Tuesday, SA Police confirmed they are returning to the Oak Park Station in Yunta to “take advantage” of a new opportunity to search for the missing boy.

“The searching has resumed to take advantage of opportunities that may have arisen as a result of recent heavy rains on the property,” an SA Police spokesperson said.

“Task Force Horizon members will be searching numerous locations on the property for evidence in the case over the next three days.

“The searching will be conducted by Major Crime detectives and specialist STAR Group officers.”

The young boy was last seen on September 27, 2025. He vanished, so far without a trace, from a family homestead on Oak Park Station in South Australia’s mid-north.

Initially, SA Police said Gus had likely “wandered off”. However, months on, a major crime has been declared and someone who lives at the property, who is not Gus’ parent, is now a suspect and is not cooperating with authorities.

Multiple, large-scale searches have been conducted involving hundreds from across SAPOL, the SES, the ADF, community volunteers and an Indigenous tracker.

Dams have been drained, mine shafts searched, and an “extensive” aerial search has been completed. Despite their best efforts, across 241 days, Gus has not been found.

Gus Lamont’s grandparents’ statement

SA Police previously claimed that members of Gus’ family were not cooperating with them.

In a bombshell press conference, police revealed a member of Gus’ family who lived at the property, and who was not a parent, was no longer cooperating with officers.

Following a SA Police press conference in February, Josie Murray and Shannon Murray issued a joint statement through their respective legal teams

“We are absolutely devastated by the media release of SAPOL Major Crime,” the statement began.

“The family has cooperated fully with the investigation and want nothing more than to find Gus and reunite him with his mum and dad.”

The Nightly does not suggest any wrongdoing by Gus Lamont’s family, merely that the police are continuing their investigation.

The lawyers representing Josie and Shannon stated that their clients would not be participating in interviews or commenting further.

The statement contradicts claims made by Det-Supt. Darren Fielke.

“A person who resides at Oak Park Station has withdrawn their support for police and is no longer cooperating with us,” he said on Thursday.

“On 14 and 15 January, this year, Task Force Horizon investigators attended Oak Park Station and executed a search warrant. Further comprehensive forensic search was conducted of the Oak Park Station homestead. A number of items were seized, including a vehicle, a motorcycle, and some electronic devices.

“All of these items are now subject to forensic testing.