A new earthquake has struck the Emilia region in northern Italy, killing at least 10 people and burying several others under rubble, local media say, BBC reports.

All the deaths were in the Modena area.

Three were killed when an industrial shed collapsed in Medolla. Three also died in San Felice, two in Mirandola and one in Cavezzo.

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.

Milan and Bologna were shaken too.

Some people fled from buildings when they felt the tremor, which struck at 09:03 local time (07:03 GMT).

There have been several aftershocks since, including a large one at about midday which sent people back out into the streets, says the BBC's Mark Dizzani in Modena.

Italian media report that some buildings damaged by the larger 20 May quake have now collapsed in Mirandola, Finale Emilia, San Felice and Cavezzo. That quake measured 6.0.

Many historic buildings now lie in ruins in Cavezzo, where the roof of a church damaged by the earlier quake collapsed on Tuesday, Il Messaggero news website reports.

Calls to emergency services have overloaded the telephone network in some areas, causing a system blackout. Train services have been halted in some parts of northern Italy.

Office workers were evacuated in Bologna and there are reports of evacuations elsewhere too.

The quake struck 40km 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, the Austrian border and Piedmont.