Greece’s government declared a state of emergency on Santorini on Thursday after hundreds of undersea earthquakes shook the resort island for nearly a week. The ministry of civil protection’s announcement will provide authorities faster access to state resources.

More than 11,000 people have already left the island of Santorini following a series of tremors in recent days.

A 5.2 magnitude tremor has been detected between the Greek islands of Santorini and Amorgos — the most powerful recorded since activity started on on January 31.