Greek authorities say an earthquake with preliminary 4.9-magnitude has shaken the country's southern Aegean islands, including Crete. No injuries or damage were immediately reported in the quake, which was the third in three days in the area.
The Athens Geodynamic Institute says the undersea earthquake occurred at 12:50 p.m. (1050 GMT) Saturday about 243 kilometers from the Greek capital, Athens, between the islands of Santorini and Crete. It says the earthquake occurred at a depth of 31 kilometers.
Earthquakes of magnitude 5.3 and 5.2 occurred in the same area on Thursday and Friday, respectively.
Greece is in one of the world's seismically active areas, with hundreds of quakes occurring each year.