Greece has declared a state of emergency on Santorini after a series of earthquakes shook the popular tourist island this week and prompted more than 10,000 residents and workers to evacuate.

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,