Scientists say a strong earthquake with a preliminary magnitude of 4.7 has struck western Greece.
Athens' Geodynamics Institute reports that the tremor struck at 6:08 p.m. (1508 GMT) Saturday about 30 kilometers (19 miles) northwest of the city of Agrinio at a depth of 28 kilometers (17 miles).
No damage or injuries have been reported so far.
Greece lies in an active seismic region and earthquakes of similar magnitudes are frequent.