An earthquake of magnitude 5.1 on the Richter scale was registered in the Aegean Sea, according to data from the European Seismological Center. The tremor was also felt in Bulgaria, bTV reported.
Lights swayed on the high floors of buildings in Sofia.
The earthquake was at a depth of 5 km, according to data.
A secondary tremor of magnitude 3 followed. According to data from the Bulgarian Academy of Sciences, the earthquake had a magnitude of 5.3.
According to the National Institute of Geophysics, Geodesy and Geography at the Bulgarian Academy of Sciences, the epicenter was at a depth of 10 km near the Greek peninsula of Halkidiki.