New earthquake in northern Italy kills 15
Tuesday's tremor, estimated at magnitude 5.8, hit the same region where a quake 10 days ago killed seven people and destroyed many buildings.
Buildings damaged by the first quake have now collapsed in Mirandola, Finale Emilia, San Felice and Cavezzo, Italian media report.
Milan and Bologna were shaken too.
The quake struck 40km (25mi) north of Bologna and 60km east of Parma, at a depth of 9.6km (six miles), Reuters reports. It was felt as far away as Venice and the Austrian border.