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.

ATHENS (Reuters) -Greek authorities have warned of an increase in seismic activity around the Aegean tourist island of Santorini, advising people to avoid four ports, empty their pools, refrain from gathering in indoor spaces and shut schools on Monday.

An earthquake warning has been issued for Greek holiday island Santorini. The Greek holiday island has seen a series of small earthquakes in recent days. Tremors up to 4.6 in magnitude have been recorded, while nearby earthquakes have measured 4.3 and 3.9 magnitude this morning.

Increased volcanic activity in Greece’s famed tourist hotspot of Santorini has prompted the country’s civil protection minister to call a meeting with local and disaster response officials

Greek authorities have advised people on the Aegean island of Santorini to shut schools on Monday, avoid two small ports and refrain from gathering in indoor spaces after increased seismic activity in the area over recent days.

Greek authorities have issued a warning to visitors to one of its most famous islands due to a surge in volcanic activity.