An earthquake measuring 5.3 on the Richter scale struck shortly before 3 a.m. Friday in Elassona.
According to the Geodynamic Institute, the focal depth of the earthquake was 2.7 km.
The quake struck 17 kilometers west-southwest of Elassona.
A few minutes later, earthquakes of 3.7, 3.6 and 3.9 magnitude with the same epicenter followed.
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