Detectives inspect water tank and outhouse in Gus investigation.

Cadaver dogs searched a water tank and a recently cemented outhouse at a family-owned property, and detectives have returned to the area to continue searches; police say a resident of the remote station has been declared a suspect and that Gus is likely dead, and no evidence was found in the latest searches.

Detectives and cadaver dogs from New South Wales inspected a water tank and a recently cemented outhouse at a sheep property owned by Gus Lamont's family, about 30km west of Oak Park Station. Task Force Horizon officers also searched a second property at Grampus, roughly 24km from Oak Park, and were reported to have returned to the area to continue searching for at least two days. Earlier this month South Australian Police announced someone living at the remote Oak Park Station had been declared a suspect and that Gus is likely dead. No evidence relating to the boy's disappearance was found during the latest search. Known developments: - Cadaver dogs searched a water tank and a recently cemented outhouse at a family-owned sheep station 30km west of Oak Park Station. - Task Force Horizon detectives searched the Grampus property about 24km from Oak Park and returned to continue searches in the area for at least two days. - Police announced a resident of the remote station has been declared a suspect and that Gus is likely dead; no arrests or charges have been made in relation to his disappearance. - Gus's grandmother, Josie Murray, was arrested on firearm charges and bailed to appear at Peterborough Magistrates Court in May; police said those charges are not related to the disappearance. Summary: Police say their investigation into Gus Lamont's disappearance is ongoing, with detectives conducting searches at multiple family-owned properties but finding no evidence in the most recent operation. Investigators remain in the area for further work over the coming days, and a separate court date for a firearm charge against a family member is scheduled in May.