The search for missing boy Gus Lamont is continuing on Friday as authorities prepare to drain a large dam on the property where he vanished.

Authorities concluded the latest effort to locate a four-year-old boy, whose disappearance in the rugged outback of South Australia gripped the nation. The operation to find Gus Lamont covered 95sqkm on foot, expanding beyond areas previously combed by the police and the Australian Defence Force (ADF).

A dam on a remote South Australian sheep station has been drained during a new search for Gus Lamont — but there has still been no trace of the missing four-year-old boy.

Police looking for missing Australian boy Augustus "Gus" Lamont have ruled out a theory behind his disappearance after searching a body of water near to where he vanished. The four-year-old boy went missing from his family's remote sheep station in South Australia on September 27.

Australian police have called off a search for a four-year-old boy who has been missing in the outback for almost three weeks, after fresh efforts failed to find any traces of the child. Gus Lamont was last seen playing outside his home on a remote sheep station near Yunta, about 300km (186 miles) from Adelaide, on 27 September.

A member of the search party looking for missing four-year-old Gus Lamont has revealed there is zero evidence he is on the property he vanished from.

Police will drain a dam on the remote outback farm where four-year-old Gus Lamont vanished, in a desperate attempt to find the little boy.

Authorities said they hope little Gus “has crawled into a hole somewhere and he’s just still hanging in there”

The search for an Australian army helicopter that crashed at sea killing four people during a military exercise with the United States last week found human remains but not the black box crucial to explaining the tragedy, an officer said on Thursday.

Coral Adventurer CEO Mark Fifield said the company has offered “heartfelt condolences to the Rees family" following the incident