TV Doctor Michael Mosley Goes Missing While on a Walk in Greece: 'No Trace of Him'

Michael Mosley was last seen when he set off hiking along St. Nicholas Beach on Wednesday, June 5

Authorities in Greece are looking for Michael Mosley, a popular television doctor known for his advice on dieting, who disappeared on one of the country’s islands.

The 67-year-old British national was reported missing on the island of Symi on Wednesday, June 5, according to a statement from the Hellenic Police, obtained by PEOPLE.

The search for Mosley was launched after the television presenter did not return from a hike that same day, according to The Telegraph and the Associated Press.

Mosley was last seen when he set off hiking along St. Nicholas Beach at 1:30 p.m. local time on Wednesday, The Guardian reported. His wife, Dr. Clare Bailey, contacted authorities around 7:30 p.m.

A senior security official involved in the mission said the television doctor was visiting friends on the island “where distances are short.”

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An excessive heat warning was in effect for the island at the time of Mosley’s disappearance, according to The Telegraph. Greek police said his phone was left by the beach around the same time he disappeared.

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“There is just no trace of him — none whatsoever,” Constantina Dimoglidou, a senior police spokesman, said per The Telegraph. “And that means that, for us at least, every potential scenario is open and being investigated."

Mosley is a columnist for The Daily Mail and is well-known for co-authoring the 2013 book “The Fast Diet” with journalist Mimi Spencer.

He introduced the Fast 800 diet, which encourages dieters to restrict their calorie intake to 800 a day for at least two weeks, according to the AP. He was also credited with popularizing the 5:2 diet, which involves fasting for two days a week to lose weight, per The Guardian.

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He was nominated in 2002 for an Emmy as an executive producer for the BBC science documentary The Human Face, the AP reported.

Mosley has appeared in multiple docuseries, including the Channel 4 show Michael Mosley: Who Made Britain Fat? and the BBC series Trust Me, I’m a Doctor, per The Telegram. He lived with tapeworms inside of him for six weeks for the 2014 BBC documentary Infested! Living With Parasites.

The search for Mosley is expected to expand on Friday, June 7, according to The Guardian.

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