The quake's epicenter was near the coastal city of Ravenna, Italy's ANSA news agency reported.
No major damage has been reported from the quake.
Meanwhile, the death toll from the May 20 and 29 quakes rose from 24 to 26 Tuesday when two people died of the injuries they suffered during the quakes.
The May earthquakes left thousands of people homeless in Emilia-Romagna and caused about $6.2 billion in damage to the region.
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