Police treat 4-year-old Gus Lamont’s disappearance in remote South Australia as a major crime, suspecting a family-linked individual who is no longer cooperating.

South Australia Police have declared the disappearance of four-year-old Gus Lamont a major crime, identifying a person with close ties to his family’s remote sheep station as a suspect. The individual, not one of Gus’s parents, is no longer cooperating with investigators, prompting the reclassification. Authorities ruled out the boy wandering off or being abducted by a stranger, citing no evidence of foreign presence or tracks. Despite an extensive search involving over 400 personnel, drones, aircraft, and forensic operations, no trace of Gus has been found. A search warrant led to the seizure of a vehicle, motorcycle, and electronic devices for analysis. The case remains active, with police continuing to seek public assistance.