The emergency measure announced on the island of Amorgos follows a similar decision for nearby Santorini on February 7 after thousands of unusual tremors were registered in an undersea area

Amorgos: Emergency declared on second Greek island as string of earthquakes persists - A series of earthquakes continues to rattle the south-eastern Aegean Sea region

Earlier this month the UK Foreign Office issued travel advice for British tourists in the area - with thousands of earthquakes reported in recent weeks