The tremor came just a few months after a series of quakes with magnitudes ranging from 4.7 to 5.3 struck the region, causing damage to Italian cities near the Adriatic Sea, Sputnik reported.
The province of Ravenna in north-eastern Italy was hit by a 4.6 magnitude earthquake, the European-Mediterranean Seismological Centre reported on Sunday. The centre also stated that a similar quake took place in the city of Rimini.
There are currently no reports of dead or injured in the incident. It is not clear if other quakes are to be expected following the initial tremor.
Ravenna is an ancient city on the Adriatic coast, located 80 km (about 50 miles) from Bologna.