Greek authorities are on alert, 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.

Greece has declared a state of emergency on Santorini after a series of earthquakes shook the popular tourist island this week and prompted more than 10,000 residents and workers to evacuate. Since Sunday,

Greece’s government declared a state of emergency on Santorini on Thursday after hundreds of undersea earthquakes shook the resort island for nearly a week. The ministry of civil protection’s announcement will provide authorities faster access to state resources.