Thousands of people in Central Italy have spent the night in cars, tents and temporary accommodation following the fourth earthquake in the area in three months.
 
The 6.6 magnitude quake – Italy's strongest in decades – struck close to the region where nearly 300 people were killed by a quake in August.
 
This time no-one appears to have died, but about 20 people were injured.
 
An evacuation of buildings in central Italy deemed vulnerable to seismic activity last week, following strong aftershocks from August's quake, may have saved lives.