People have been advised to avoid large indoor gatherings, small ports and areas where rockslides could occur.
A fresh series of quakes hit the Aegean island of Santorini early on Thursday, part of an unprecedented seismic wave that has baffled scientists and led to a mass exodus of residents.
An earthquake of 5.2 magnitude struck the sea bed between the Greek islands of Amorogos and Santorini on Wednesday night — the strongest recorded in recent days. More than 11,000 people have so far ...