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.

More than 200 tremors have been registered since Friday between the Greek volcanic islands of Santorini and Amorgos.

Greece’s tourist island of Santorini on Sunday braced for the prospect of more tremors after more than 200 small earthquakes shook the site of one of the largest volcanic eruptions in recorded history,

A warning of increased seismic activity in Santorini has been issued in a Foreign Office travel advisory. The alert reflected advice from the Greek Ministry of Civil Protection for the Aegean island and its smaller neighbours of Anafi, Ios and Amorgos, following more than 200 tremors registered in the area over 48 hours.

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