Santorini has been hit by a powerful, shallow 5.3 magnitude earthquake, which is the strongest to strike the Greek island during recent seismic activity in the area. The tremors were felt in Athens on Monday evening and measured a focal depth of 17km (10.6 miles).

Greek authorities declared a state of emergency for the island of Santorini on Thursday after an unprecedented series of undersea earthquakes shook the popular island for nearly a week.

An earthquake of 5.3 magnitude hit the Greek island of Santorini late Monday, officials said, the strongest yet of the thousands of tremors that have shaken the area, prompting thousands to leave. Felt as far away as Athens,

Residents of neighbouring Amorgos remain on high alert after Monday's tremors, which followed a moderate 5.0 magnitude earthquake between the islands on Sunday evening. The area has been rocked by seismic activity for the last two weeks,