The Greek holiday island of Crete was rocked by another earthquake on Thursday morning as a 6.1 magnitude tremor struck off the coast - people were urged to stay away from coastal areas

A strong 6.1 magnitude earthquake has struck off the coast of Crete, triggering tsunami warnings and emergency measures across southern Greece.

A very strong earthquake, measuring 6.1 on the Richter scale, occurred at 06:19 (Greek time) 56 kilometers north-northeast of Heraklion, Crete, according to data from the Geodynamic Institute of the National Observatory of Athens.