Schools were closed and emergency crews deployed on the volcanic Greek island of Santorini after experts warned of a spike in seismic activity. View on euronews

Authorities deployed emergency rescue crews to Greece's volcanic island of Santorini on Monday as hundreds of people scrambled to leave after a spike in seismic activity raised concerns about a potentially powerful earthquake.

Greek officials are warning those on the popular tourist island destination of Santorini to stay alert in the coming days due to increasing seismic activity which could mean a strong earthquake is possible.

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.

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 Prime Minister Kyriakos Mitsotakis has urged people on the island of Santorini to "stay calm" after an increase in seismic activity. His remarks come as schools were told to close on Monday and authorities advised against large gatherings in enclosed spaces across the island,

Schools have been shut and public gatherings are being discouraged on the Greek island of Santorini as local authorities put the popular tourist spot on high alert for a big earthquake, following scores of small temblors over the last two days.