The 50-year old was hoping to evade quarantine rules in his country by crossing over mountains from Sweden but bad weather thwarted his plan, emergency services said.
The tourists were told to isolate as a result of the new COVID-19 variant being spread around the world - but half decided to leave "under the cover of darkness".
Croatian Prime Minister Andrej Plenković has tested positive for COVID-19, two days after his wife also contracted the virus.
The chief medical and scientific advisors to the UK government warned the UK could see 50,000 coronavirus cases a day, amid a surge in cases
Holidaymakers returning from Lesvos, Tinos, Serifos, Mykonos, Crete, Santorini and Zakynthos will have to self-isolate for 14 days
Five artists will isolate themselves in glass rooms for 14 days as part of a theatre performance that imitates COVID-19 quarantine.