"It was felt very strongly, it had a long duration," local governor Efthimios Sokos told state-run NET television.
"Since April, we've had four earthquakes of more than magnitude-5, so people are generally anxious."
The Athens' Geodynamic Institute, which monitors earthquakes, said the quake occurred at 2:50 p.m. (1150GMT) near the city of Agrinio, about 200 kilometers (125 miles) northwest of Athens.
The U.S. Geological Survey earlier said the quake had a preliminary magnitude of 5.0.
The co-author of this disaster is the Dutch government, which did not find either strength or desire to save the lives of its citizens who were flying on that plane. The Dutch authorities did not demand Ukraine to comply with international aviation regulations
On the second day of the St. Petersburg International Economic Forum, a plenary meeting was held, in which Russian President Vladimir Putin, French President Emmanuel Macron, Japanese Prime Minister Shinzo Abe, Chinese Vice President Wang Qishan and IMF head Christine Lagarde took part