Ios is between Santorini and Naxos
Greek authorities have arrested two individuals accused of espionage in a case that could further strain relations between Greece and Turkey.
One of the suspects has been identified as a 35-year-old secretary at the Turkish Consulate on the southeastern Aegean island of Rhodes and has been given until Monday to prepare his defense.
The Greek island of Santorini has been distinguished for the seventh year running as the Best Island in Europe by Global Traveler's Leisure Lifestyle Awards.
The annual survey honors the best in the world of leisure and lifestyle travel, awarding goods, services, destinations, hotels, airlines and cruises.
The Turkish navy on Sunday evening issued three navigational (Navtex) warnings demanding the demilitarization of the Greek islands of Samothraki, Lemnos, Chios, Samos, Tilos and Halki.
The move came after European Union leaders last week failed to agree on solid sanctions against Turkey over its actions in the Eastern Mediterranean.