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Police have returned to the home of missing four-year-old Gus Lamont to search for new evidence after identifying a suspect in his disappearance<\/a>.<\/p>\n Gus (short for August) went missing on 27 September 2025<\/a> from his family\u2019s remote sheep station, sparking one of the biggest and most intense searches in South Australia\u2019s history.<\/p>\n He had been playing outside at 5pm but, when his grandmother went to call him inside half an hour later, he was gone, police were told.<\/p>\n Based on information from people living with Gus at Oak Park Station, SA police initially believed he had wandered off.<\/p>\n Sign up: AU Breaking News email<\/sub><\/a><\/p>\n Drones, divers, dogs and teams of volunteers, police, emergency services and defence force personnel searched the 60,000-hectare property, which is about 300km inland from Adelaide, and beyond.<\/p>\n After advice from survival experts, the hope of finding Gus alive dwindled, and the search became a recovery operation.<\/p>\n Police had consistently said there was no evidence of foul play, though they could not rule anything out, and that the family was cooperating.<\/p>\n But police announced on 5 February<\/a> that the case was now considered a major crime, alleging that the suspect was someone who lived with Gus, and that they had seized a vehicle, a motorbike and electronic devices in mid- January.<\/p>\n Det Supt Darren Fielke, the officer in charge of major crime, said police had \u201cidentified a number of inconsistencies and discrepancies\u201d in the information family members gave them.<\/p>\n \u201cAs a result of these inconsistencies, and investigations into them, a person who resides at Oak Park Station has withdrawn their support for the police and is no longer cooperating with us,\u201d he said.<\/p>\n \u201cThe person who has withdrawn their cooperation is now considered a suspect in the disappearance of Gus.\u201d<\/p>\n Police had been working on three theories, Fielke said: that Gus had wandered off, that he had been abducted, and that someone known to him was involved with his disappearance.<\/p>\n Their investigations found the first two options were unlikely, leaving them with the third option.<\/p>\n Fielke stressed that the suspect was not one of his parents.<\/p>\n Gus\u2019s two grandmothers released a statement<\/a> through their lawyers, saying they were \u201cdevastated\u201d that the case was now a major crime, that the family has \u201ccooperated fully with the investigation and want nothing more than to find Gus and reunite him with his mum and dad\u201d.<\/p>\n On Monday, police said Task Force Horizon detectives will return to Oak Park station and will be there for at least two days.<\/p>\n \u201cMembers attached to Task Force Horizon conducting inquiries into the disappearance of four-year-old Gus Lamont on 27 September 2025 have returned to Oak Park Station to continue searching for evidence,\u201d Sapol said in a statement.<\/p>\n \u201cIt is anticipated that Task Force Horizon detectives will remain in the area for at least the next two days.<\/p>\n \u201cAn update on the search activities will be provided as they progress.\u201d<\/p>\n Anyone with information should contact Crime Stoppers<\/a> on 1800 333 000.<\/p>\n