The account that brought rescuers to Oak Park Station began with a four-year-old boy playing in the sand outside a homestead. His grandmother reported that when she went to look for him, he was gone. Gus Lamont’s family searched the property in South Australia’s Mid North before emergency services joined them on September 27, 2025.
At first the working question was how far a small child might have walked. The land included water points and old workings, places rescuers had to check even without knowing which way Gus had gone. By September 2026 detectives were still seeking information about what happened there. The question they were asking had changed.
The search around Oak Park Station
The first operation drew police, emergency service crews, members of the Australian Defence Force, an Indigenous tracker and community volunteers. Aircraft and drones gave teams a view beyond the ground they could cover on foot. Police later described it as their most intensive search for a missing person.
For all its scale, the search could not independently confirm where Gus had last been. The account of his playing outside told teams where to begin. It did not provide a sighting of him walking away from the homestead. That distinction became more important as investigators went back through what they had been told.
What changed in the investigation
In January 2026 detectives searched the homestead under warrant. They seized a vehicle, a motorcycle and electronic devices for forensic examination. On February 5 South Australia Police declared the disappearance a major crime. Investigators described discrepancies in information they had received and said someone who had withdrawn cooperation was now regarded as a suspect. They explicitly excluded Gus’s parents as suspects.
The declaration changed the emphasis of the inquiry. Officers still needed to find Gus. They also needed to test whether someone he knew had been involved in his disappearance and suspected death. Police have kept the suspect’s identity private. Seizing a vehicle or examining a device does not establish what testing revealed or who was responsible.
Timeline of the search and inquiry
- September 27, 2025. Gus is reported missing from Oak Park Station. A search of the property and surrounding country follows.
- January 14–15, 2026. Detectives execute a search warrant at the station and retain items for forensic examination.
- February 5, 2026. Police declare a major crime and publicly describe the suspect line of inquiry.
- May 28, 2026. Police report the conclusion of an eleventh search. A three-day examination of more than 30 kilometers of creeks and waterways, along with wells and bores, yields no new evidence.
- September 23–24, 2026. South Australia announces a reward of up to A$1 million. Detectives say they are assessing information received after the announcement.
Why crews returned after the rain
Heavy rain and flooding altered conditions on the property. In May detectives and specialist officers examined waterways again. They checked wells and bores and announced plans to use aerial surveying to look at the changed ground. A place searched months earlier could present a different surface after heavy rain.
Police were precise about the result. That operation produced no new evidence. It was a statement about the ground they had just worked and the material they had hoped to recover. It did not locate Gus or determine what had happened to him.
What the reward is for
In September police said the evidence they had gathered gave them little reason to believe Gus had wandered away or had been abducted by a stranger. Their attention remained on possible involvement by someone known to him. The reward applies to information leading to a conviction in connection with the disappearance, the recovery of his remains, or both.
The following day investigators acknowledged receiving new reports. A report from a member of the public must still be checked against the records, searches and witness accounts that Task Force Horizon has assembled. No announced finding from those calls has established Gus’s whereabouts.
Frequently asked questions
Is the original account of Gus playing outside independently confirmed?
Police reported the account supplied to them. The investigation has not established a witnessed route away from Oak Park Station.
Are his parents suspects?
South Australia Police expressly said neither parent was a suspect.
Did the May search find Gus?
No. Police said that operation found no new evidence. Their September reward appeal asked for information that could help locate his remains or secure a conviction.
Where should information go?
South Australia Police direct tips to Crime Stoppers. The official reward notice below gives the contact details.
Research Sources
The following resources were consulted to verify and update this article.
- South Australia Police, major crime declaration — Explains the January warrant, evidence taken for examination and the February change in investigative focus.
- South Australia Police, May 2026 search update — Records the search of waterways, wells and bores after flooding and the outcome of that operation.
- South Australia Police, September reward announcement — Gives the reward criteria and police assessment of the remaining lines of inquiry.
- South Australia Police, response to the reward — Records the intake and assessment of tips following the reward announcement.
- ABC News Australia, chronology of the Oak Park search — Attributes the original homestead account and reports the February police briefing.
- Adelaide Now, earlier search coverage — Previously listed in this article. Access restrictions prevented review of the full report.
- The Sun, earlier search coverage — Previously listed in this article. The full report could not be reopened for this review.
- News.com.au, earlier misinformation coverage — Previously listed in this article. Access restrictions prevented review of the full report.
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