$1 million reward offered for information on Gus Lamont

A $1 million reward has been offered for any information about missing toddler Gus Lamont one year after he disappeared from his family's rural property.

South Australian Premier Peter Malinauskas and Police Minister Michael Brown announced on Wednesday that they were matching the highest reward ever issued in the state's history for information that would lead to finding a body or a criminal conviction.

"Justice needs to be done in one way or another,'' Mr Malinauskas said.

"We will not tolerate, as a state, any circumstances where children go missing are not able to be accounted for.

"We throw everything at it, and today we put on the table and put in place a $1 million reward to achieve that outcome."

Detective Superintendent Darren Fielke said the detectives working the case "live and breathe this every day".

Det Sup Fielke announced on February 5 that the incident had been declared a major crime and police believed Gus was no longer alive.

Detectives have previously said Gus was last seen by his grandmother playing on a mound of dirt near the homestead at Oak Park, a sprawling sheep station near Yunta in outback South Australia, on September 27, 2025.

Assistant Commissioner Ian Parrott later said that Gus was seen at 5pm on the day of his disappearance by his grandmother.

"At 5.30pm, she has gone outside to call him in, only to find him missing," he said.

The initial 10-day air and ground search was one of the largest SA Police had undertaken, involving hundreds of emergency service personnel.

Search teams and Major Crime detectives have repeatedly returned to the property, but they have yet to uncover any clues or evidence as to the boy's fate.

The only other people at the property at the time were Gus's grandmother Josie Murray, his mother Jess Murray, and Gus's younger brother.

Police said they had identified ''inconsistencies and discrepancies'' in timelines provided by family members and a person living at Oak Park had withdrawn their support and was no longer co-operating with detectives.