Australia's authorities have ended the hunt for a four-year-old child who has been missing in the outback for almost several weeks, after fresh efforts were unable to locate any traces of the youngster.
The young boy was observed playing near his home on a secluded farmland in the vicinity of Yunta, about 186 miles from Adelaide, on September 27th.
His grandmother stepped away for about a short period before looking for him, only to discover the youngster missing, initiating one of the largest ground and aerial searches in South Australian past.
Law enforcement - who do not think there was wrongdoing - say they will persist investigating, but that the matter has become a "recovery mission".
Earlier, authorities briefly reduced the operation, only to restart it on this week alongside 80 Australian Defense Force members.
"Commissioner Grant Stevens said officials were looking a more extensive region based on updated evaluations from survival and operation experts, rather than any new information."
On the end of last week, police confirmed that the latest search had not found any signs of Gus.
"The fact that the young boy is a small child, the landscape is very rough, unforgiving and subject to variable weather conditions has made the mission difficult and more complex for those engaged," officials said in a release.
About 470 sq km - an zone roughly twice the size of a major city - has now been covered, and a twelve-member unit created recently is anticipated to continue investigating. Officials have not ruled out further searches of the location in the coming days.
Gus, who has been characterized as an adventurous but quiet boy, was last seen clothed in a grey hat, light-colored pants, footwear and a navy full-sleeve shirt displaying a bright character figure.
The case has provoked significant attention throughout Australia, with pictures of the light-haired, curly-haired child displayed across local media and discussion spreading widely digitally.
It caused authorities to request that individuals discontinue phoning them with their "speculations", and appeal for them to obtain updates from reliable channels.
Authorities earlier this week said the boy's family stay "resilient" despite the tragic situation.
"One can understand just how they are coping... without having answers as to exactly where Gus is and what's occurred to him. This would be devastating for all loved ones," Official the commissioner said.
Through a representative, the family household has before said they are "overwhelmed" by the child's disappearance.
"This has come as a shock to our household and friends, and we are finding it difficult to understand what has occurred," Bill Harbison said.
"Their son's absence is experienced in everyone, and we miss him beyond words can express."
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