An earthquake with a magnitude of 5.7 has struck southern Greece, being felt as far away as Athens, Malta and Crete according to initial reports.

There were no immediate reports of damage or injuries, but the quake appeared to be followed by a string of aftershocks.

The quake struck just after 7am on Friday morning and was centred beneath the seabed near the Strofades islands, about 75 miles south-southwest of the western city of Patras, according to the Athens Geodynamic Institute.

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