Police are investigating "inconsistencies" in the story of a man claiming he survived five days in southeast Queensland bushland on a ration of sultanas.
Brian Saunders, who reported he got lost while hiking on Saturday, emerged from Lamington National Park on Thursday morning sporting only a few minor cuts and grazes.
The 58-year-old from Logan made his way to a farmhouse on Christmas Creek Rd, where he called emergency services.
Ambulance officers described Mr Saunders as being in "very good spirits" when they arrived at the property.
But his seeming good fortune and an exclusive television interview has generated questions about the authenticity of his ordeal.
Logan Acting Chief Superintendent Ben Hanbidge told AAP on Friday afternoon police were looking into the circumstances surrounding the incident.
"We're making investigations to establish the veracity of his version of events," he said.
"There are some inconsistencies we'd like to clear up with him."
Supt Hanbidge said police, SES and other volunteers "put a lot of effort" into an extensive ground and air search over five days to try and locate Mr Saunders.
"It's certainly in the public interest for us to substantiate exactly what occurred," he said.
"There are a lot of questions we want answered."
Mr Saunders was questioned by detectives on Thursday night while in hospital.
He told authorities he took three sandwiches, a few litres of water and survived on a ration of sultanas since starting out on his hike on Saturday.
Mr Saunders called police that afternoon after he became lost.
He was told to stay where he was, but police were unable to find him when they arrived at the location on Sunday morning.
Released from hospital on Friday morning, Mr Saunders declined to comment to media when confronted by reporters and television cameras outside his Tanah Merah home.
He told Channel Seven the night before that while he was proud of walking out of the bush on his "own steam", it didn't please him how much money was spent in the search.
