ATHENS, Greece — Scientists have detected several thousand earthquakes, the vast majority of them with small magnitudes, in just over two weeks near Greece’s volcanic island of Santorini, the University of Athens’ crisis management committee said Tuesday, adding that a larger quake cannot be ruled out.

Greece’s volcanic tourist island rattled by earthquakes every few minutes - Thousands of residents and visitors have already left Santorini

Authorities declared a state of emergency on a second Greek island Wednesday as a series of earthquakes continued to rattle the south-eastern Aegean Sea region. The emergency measure announced on the island of Amorgos follows a similar decision for nearby Santorini on Feb.

Seismologists have noted that the epicentre of the earthquakes is steadily drifting northward in the direction of Amorgos.