Mitsotakis's remarks come as many people in Santorini spent Sunday night outdoors, amid fears of potential damage to buildings during the quakes. Some focal points of the tremors have been recorded at a depth of just 2km (1.2miles) below the surface.

Greek authorities deployed emergency services on the holiday island of Santorini to make sure people were out of harm's way, as hundreds of mini-quakes continued to rattle the area.