Michael Mosley spotted in haunting CCTV footage just 30 minutes before mysterious disappearance

Mosley has been missing since Wednesday after failing to return from a coastal walk, with an urgent appeal being published on a local Facebook group soon after.

His wife Clare was the one to raise the alarm with police.

The MailOnline reports timestamps of the CCTV as 1:52pm and taken from Blue Corner in Pedi, a 15-minute walk from St Nicholas, and a quarter of the way through the walk he had set out on.

Experts and TV colleagues at home have become increasingly concerned for the doctor's whereabouts, with local journalist Niki Kitsantonis referring to the possibility he had been "swept away at sea".

Speaking on ITV's GMB, she stated: "There are fears he might have slipped... The mayor of the island is worried he has perhaps (been) swept away at sea."

Meanwhile, Mayor Eleftherios Papakalodoukas told the BBC that firefighters carrying out the search had informed him that they believed it was "impossible" for Mosley to be in the same area where he was reported missing.

Papakalodoukas added: "It is a very small, controlled area, full of people. So if something happened to him there, we would have found him by now."

The mayor reiterated the fears stated by Kitsantonis suggesting Mosley "followed another path" or had fallen into the sea.

The theory Mosley may have entered the water could make the search "more complex" as police continue to comb the area where the father-of-four went missing.

Speaking to the Express, a Greek news anchor George Evgenidis put forward this as a possible explanation as to why the doctor has not yet been found.

He told the publication: "There is no official information or update on the course of the search.

"However, according to information a scenario that is being examined is that he fell off a rock and then into the sea.

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"This means that the search and rescue operations will be more complex than if he had an accident on the ground."

Police in the area has reportedly promised "more men" will soon be enlisted to help with the search while helicopters and drones have also been deployed.

Mosley's children are also reported to have jetted to Greece to help with the search for their father.