- At least 20 people injured in the strongest quake in more than 30 years
- Central Italy also hit by two other earthquakes last week
(CNN)A powerful 6.6-magnitude earthquake rocked central Italy on Sunday morning, injuring at least 20 people, in the strongest tremor to hit the country in more than three decades.
• Fire and rescue services said six people had been pulled from rubble in Norcia.
• There were no immediate reports of deaths -- many residents had not returned since a devastating quake in August.
• There have been about 200 aftershocks since Sunday's quake in the border area between the Marche and Umbria regions, according to National Institute for Geophysics and Vulcanology.
• Some villages are cut off, so the impact there has not been assessed, said Fabrizio Curcio, the civil protection chief.
• Some 15,000 people are without electricity, according to Curcio.
• Much of the Basilica of San Benedetto in Norcia collapsed.