Roger Curry was flown to the UK and abandoned in a car park, according to court papers
Roger Curry was allegedly abandoned in the car park of Hereford bus station on November 7 2015 after travelling from his home in Los Angeles with his wife and son.
Legal documents seen by the BBC's Panorama programme and filed in Los Angeles state: "In late 2015 Mr Curry was taken surreptitiously to England by his wife Mary Curry and his son Kevin Curry and abandoned there."
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Roger Curry is now back in the US where he is under local authority care
The 76-year-old, who did not know his name or where he was, was found in the company of two men who flagged down a passing ambulance.
One of the men – described as having an American accent, but younger than Mr Curry – allegedly vanished from the scene.
Mr Curry was taken into the care of a nursing home while police and social services spent months trying to find out who he was.
Dementia-sufferer Roger Curry was found in Hereford bus station car park
He was finally flown back to America eight months later and is now under the care of authorities in Los Angeles.
At the time of his discovery, police appealed for help to identify the "vulnerable" man.
West Mercia Police said they also wanted to trace a man, described as being in his forties, who was seen to be walking with Mr Curry towards Hereford County Hospital on the day he was discovered.
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Roger Curry is subject of a BBC Panorama investigation
As part of the investigation, a 50-year-old man from Taunton, Somerset, was arrested on suspicion of kidnap and was bailed. He has not been charged.
Mr Curry's son Kevin, who was interviewed by Panorama, said he had had nothing to do with the abandonment of his father.
Panorama: The Mystery of the Unknown Man goes out on Monday 30 January at 20:30 on BBC One.
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