Multiple earthquakes are rattling Santorini, a volcanic island in Greece, prompting authorities to dispatch rescuers with tents, a sniffer dog and drones, and to shut schools on four islands. Residents have been warned to avoid indoor gatherings,

Santorini's earthquakes are intensifying as a rare earthquake swarm continues to rattle the Mediterranean's Aegean Sea. The earthquakes are probably caused by faults rather than volcanic activity.

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