South Australian authorities have escalated the investigation into the disappearance of four-year-old Gus Lamont, proclaiming it a “major crime” and confirming that a suspect is in their sights. The young boy vanished from a family-owned outback homestead roughly 43 kilometers south of Yunta on September 27th, sparking widespread concern and a thorough investigation.

Detective Superintendent Darren Fielke, who oversees the Major Crime Investigation Branch, made the announcement on Thursday, underscoring the seriousness of the situation. He explained that the search initially operated under the assumption that Gus might have wandered off from Oak Park Station and subsequently become lost. This was just one avenue explored by the dedicated members of Task Force Horizon.

Fielke elaborated that the investigation has also been probing two other potential scenarios: the possibility of Gus having been abducted from the station, or the involvement of someone familiar with him in his disappearance, possibly leading to his suspected death. Despite these avenues, detectives have yet to uncover any evidence pointing to an abduction, he noted.

“The search for Gus was based on him walking off from Oak Park Station and becoming lost. This is one of three investigation options that have been explored by the members attached to Task Force Horizon,” he said.

“The other two investigation options are focused on Gus being abducted from Oak Park Station or whether someone known to him was involved in his disappearance and suspected death.”

Investigators have found no evidence to suggest the child was abducted, Fielke said.

Search warrant executed at Oak Park Station

Police executed a search warrant at Oak Park Station on 14 and 15 January, Fielke said.

Detectives seized a number of items, including a vehicle, a motorcycle and electronic devices for forensic examination.

A person who resides at the sheep station has withdrawn cooperation with the case and is considered a suspect, Fielke said.

Gus’ parents are not suspects in his disappearance, he said.

He said the search for Gus had been “unprecedented” and significant resources had been deployed.

Police said they conducted eight separate ground searches that extended to a radius of 5.47km from the homestead. The search area included three dams, which were drained. Police also searched six mine shafts within a 10km radius of the homestead.

Extensive aerial searches were also conducted.

Several locations around Oak Park Station were searched for Gus’ remains on Monday, police said.

“Despite these extraordinary efforts, all of the combined searches have found no evidence, physical or otherwise, to suggest Gus has wandered off,” Fielke said.

“I anticipate there will be further searches at Oak Park Station and at several sites on an adjacent national park to locate Gus as new information and intelligence comes to hand as the investigation continues,” Fielke said.

“I can reassure the community that despite the complex and challenging nature of the investigation, Task Force Horizon will continue to thoroughly and meticulously investigate the disappearance of Gus until we get a resolution.”

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