Search teams, including a sniffer dog, looking for Michael Mosley have reportedly left the scene and returned to Athens, possibly due to concerns over the dog's health.
The TV doctor was last seen in the town of Pedi on the Aegean island of Symi on Wednesday at 1.52pm, roughly 20 minutes after he departed from St Nickolas beach on a hiking trail.
It was speculated that he may have encountered difficulties during his hike, but on Saturday night, searchers shifted their attention to a cave system known as The Abyss, where they believe he might have gone.
Speaking live from Symi on BBC Breakfast on Sunday morning, BBC Correspondent Joe Inwood said: "The authorities have said that they will continue the search, they will continue to look for Michael Mosley until he is found, but the longer it goes on the more that hope will dwindle I'm sorry to say. "Another thing we've learned this morning is that the search and rescue dog who had been on the hillside is being sent back to Athens.
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