Greek authorities are monitoring increased seismic activity on the island of Santorini, Prime Minister Kyriakos Mitsotakis said on Friday, urging the public to remain calm and follow the advice of the civil protection service.

Past tsunamis have hit Israel’s coast, and with Santorini’s seismic activity at an all-time high, the risk of another wave is being taken seriously. Authorities remain on high alert, as the region watches and waits to see what happens next.

Repeated earthquakes are rattling Greece’s volcanic island of Santorini. Scientists say the quakes aren't related to a slight increase in volcanic activity that has also been registered recently.