Authorities have declared a state of emergency on a second Greek island as a series of earthquakes continued to rattle the south-eastern Aegean Sea region.

The emergency measure announced on the island of Amorgos follows a similar decision for nearby Santorini on February 7 after thousands of unusual tremors were registered in an undersea area

Amorgos: Emergency declared on a second Greek island as a string of earthquakes persists - A series of earthquakes continues to rattle the south-eastern Aegean Sea region

A state of emergency has been declared on Amorgos as a series of earthquakes has reignited fears, with the epicentre seemingly shifting north towards the island