The cause of TV presenter Michael Mosley's death has been concluded as "unascertainable" according to a UK coroner.
The findings said the death "was most likely attributable either to heat stroke (accidental) or non-identified pathological cause".
Crispin Butler, the senior coroner for Buckinghamshire, recorded an open conclusion regarding the death of the TV presenter, who died after going for a walk on a Greek island.
Dr Mosley, 67, went missing while on holiday on the Greek island of Symi in June, which led to a five-day search by emergency services.
His body was found in rocky terrain close to the sea and it is believed he may have fallen down a small slope.
It was recovered and moved from the area by members of the coast guard.
Antonis Mystiloglou, a cameraman for ERT who was on the boat, said he saw "something black" at the end of the Agia Marina beach, on the island of Symi.
A post-mortem examination at the time concluded he died from natural causes and police said the position his body was found in and a lack of injuries supported the conclusion.
In written findings reported in The Guardian, coroner Butler said Dr Mosley's death was not the result of homicide, suicide or an accident related to injuries.
"On the morning of 5 June, they travelled to Pedi Beach, arriving late morning," it said.
"Michael had intentionally left his mobile phone back at the house to prevent it getting wet on the ferry.
"Later in the afternoon Michael decided he was going to walk back home rather than take the ferry. He had his rucksack, one litre of water and a biscuit, and had a hat and umbrella.
"Michael was described as looking energetic and cheerful as he set off. Ultimately Michael's death was classified as indeterminate, which we would describe as 'unascertainable'."
"Michael's death was most likely attributable either to heat stroke (accidental) or a non-identified pathological cause. There was nothing of note in toxicology.
"No medical cause of death could be ascertained, meaning Michael's death may have been due to a medical event or as a result of a non-traumatic accident."
Dr Mosley was a broadcaster well known in the UK for programs including the BBC series Trust Me, I'm a Doctor. He also appeared on BBC's The One Show and ITV's This Morning.
He is known in many parts of the world for his 2013 book The Fast Diet, which he co-authored with journalist Mimi Spencer.
Dr Clare Bailey Mosley thanked local authorities and residents of Symi who contributed to the search for her husband.
"Some of these people on the island, who hadn't even heard of Michael, worked from dawn till dusk unasked," she said.
"Most of all, I feel so lucky to have had this life with Michael."
