South Australian Police have said no evidence to suggest that Gus Lamont was abducted has been found following a renewed search.

Officers have returned to Yunta as part of their investigation into the disappearance of four-year-old boy Gus Lamont.

A renewed search for evidence into the disappearance of Gus Lamont is underway at the rural South Australian station from which he disappeared.

Police will resume a search for missing boy Gus Lamont today amid hopes recent rain will reveal new evidence.

A new police search for evidence into the disappearance of Gus Lamont will focus on dried-out creeks and waterways that were previously flooded.

Police will continue their renewed search for missing boy Gus Lamont today in remote South Australia.

Detective Superintendent Darren Fielke gave an update on the investigation after detectives and specialist officers returned to Oak Park Station this week to scour new locations.

One of Gus's grandparents remains a suspect in the police investigation into his disappearance.

One of the boy's grandparents remains a suspect in the investigation.

South Australian Police have said no evidence to suggest that Gus Lamont was abducted has been found following a renewed search.