An earthquake with a magnitude of 4.2 has struck not far from Athens and seismologists say it was an aftershock from a stronger quake a week ago.

The Athens Institute of Geodynamics said earthquake happened at 7:09 p.m. and was centered 21 kilometers northwest of the Greek capital. It was felt throughout the Athens area but there have been no reports of damage.
The head of the institute, told the temblor was an aftershock from the magnitude 5.1 earthquake on July 19 and there is no reason for concern.
Greece lies in an earthquake-prone part of the Mediterranean and magnitude 4 quakes are a regular occurrence.