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.

A series of earthquakes near the Greek island of Santorini have led authorities to shut down schools, dispatch rescue teams with sniffer dogs and sent instructions to residents including a request to drain their swimming pools.

The Greek island of Santorini is being rattled by dozens of tremors, prompting authorities to close schools and airlines to announce additional flights on Monday to help people leave the popular tourist destination.

Thousands are fleeing the Greek island of Santorini in the southern Aegean Sea, rattled by continued intense seismic activity, according to local media. While many people anxious over the tremors left the island by ferry or plane, those who stayed are on alert, said public broadcaster ERT.

The increase in seismic activity around the tourist island of Santorini is causing concern among officials, who have ordered schools to shut across the island and warned locals to drain their pools

Residents and tourists on the Greek island of Santorini have been put on high alert after an increase in seismic activity.

The strongest earthquake recorded was magnitude 4.6 at 3:55 p.m. Sunday, at a depth of 14 kilometers (9 miles), the Athens Geodynamic Institute said.