Police say a suspect has been identified over the disappearance of a four-year-old boy who went missing in the South Australian outback. Gus Lamont was last seen playing outside his home on a remote sheep station near Yunta, about 300km (186 miles) from Adelaide, on 27 September. His grandmother left him alone for about half an hour before checking on him, only to find the boy missing, prompting one of the largest land and air searches in the state's history.

Police stated that a person residing on the property has been identified as a suspect but confirmed the boy's parents were not under investigation. In the days and weeks after Gus was reported missing, police conducted extensive searches, covering about 470 sq km - an area roughly twice the size of Edinburgh - around his home, the Oak Park station homestead.

In late October, police reduced efforts and appointed a 12-member taskforce to continue the investigation. This team reviewed previous family statements that revealed several inconsistencies and discrepancies regarding the timeline surrounding the boy's disappearance.

As a result of these inconsistencies and ongoing investigations, a person living at Oak Park station has withdrawn their support for the police and is no longer cooperating. Detective Superintendent Darren Fielke emphasized that Gus' parents are not suspects in the case.

Investigators initially considered three potential scenarios for the boy's disappearance: he walked off, was abducted, or someone known to Gus was involved. Given the remote location, authorities ruled out abduction and found no evidence suggesting Gus had merely wandered away. Fielke assured that the investigation would continue thoroughly, expressing a commitment to locating Gus and returning him safely to his family.