A 4.0-magnitude earthquake has been registered in northern Greece, close to the border with Bulgaria, the European-Mediterranean Seismological Center announced. The tremor was registered at 1:03 am UTC on Tuesday. The quake’s epicenter was 27 km NE of Drama, Greece, 40 km SW of Smolyan, Bulgaria, and 180 km SE of Sofia, Bulgaria. According to the Geophysics Institute