Doctor Michael Mosley likely died at around 4pm on the day he disappeared, according to the initial findings from the autopsy into his death.
Greek media reports say he may have rested just yards away from the safety of a restaurant before collapsing.
Initial investigations said that foul play was not suspected although the condition of his remains made it difficult to establish the exact cause of death, Proto Thema reported.
The TV star’s body was discovered in a rocky area close to Agia Marina beach on Sunday following a major five-day search on the Greek island of Symi.
Bar staff at the resort have said it’s a “mystery” his body was not found sooner, and added that it had been “heartbreaking” that no one had seen him in distress.
The 67-year-old was last seen leaving Saint Nikolas beach at around 1.30pm on Wednesday, setting off for a coastal walk in searing heat without his mobile phone.
Tributes have been pouring in for the medic, whose loved ones have described him as “extremely kind” and a “brilliant science broadcaster” after his tragic death.
‘Dr Michael Mosley would often tell me how his own health battles were the inspiration for his work’
