Schools on four Greek islands will remain closed next week as a series of earthquakes continue to shake the region, authorities said on Saturday. Santorini, Amorgos, Anafi, and Ios have experienced more than 800 tremors measuring magnitude 3 or higher since 1 February.

Santorini experienced a new tremor of 4.8 on the Richter scale, as Prime Minister Kyriakos Mitsotakis visited the Greek island at the epicenter of seismic activity over the past two weeks.

Greek Prime Minister Kyriakos Mitsotakis visited Santorini on Friday and said his government is doing all it can to protect residents on the island, following numerous earthquakes that continue to rock the region.