The coastal town of Preveza in northwestern Greece was rattled by a 3.7 magnitude tremor Tuesday.
According to the Athens Geodynamic Institute the quake occurred at a depth of five kilometers below the seabed near Aktio.
The tremor was felt in nearby Lefkada island and the Aitoloakarnania region.
Athens was also jolted by a quake measuring 3.8 on the Richter scale Tuesday evening.
The temblor’s epicenter was near the town of Halkida on the island of Evia.