A powerful earthquake measuring 5.6 on the Richter scale shook the coastal town of Parga in western Greece at 2:49 on Saturday, according to the Geodynamic Institute of Athens. The epicenter of the quake was 14 km east-northeast of Parga at a focal depth of 10 km and was the same one that had caused a 4.3 Richter earthquake in the area 21 minutes before midnight on Friday.