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The second tremor, measuring 4.5 points on the Richter scale, occurred at 3:50 am (0150 GMT) Tuesday, almost exactly 10 hours after a stronger quake, which registered 5.2 points.
In both cases, the epicentre was under the seabed south of Crete, 364 kilometres (226 miles) south of the Greek capital Athens.
Geologists said a big earthquake was usually followed by a moderate one.
The region is frequently hit by earthquakes. Greece is one of the most earthquake-prone countries in the world.
TERRA.WIRE |