France weather: Red alert as flash floods kill 10 in south-west
At least 10 people have been killed by flash floods in the Aude region of south-western France.
Local authorities say several months' worth of rain fell in just a few hours overnight, leaving roads blocked in some areas.
A nun was swept away by the River Aude, local broadcaster BFMTV reports.
Separately, a policewoman attending to a weather-related traffic accident in the town of Albi was hit and killed by a motorist.
The death toll has been revised down from 13, France's interior ministry explained, because of an error which meant some of the dead had been counted twice.
Alain Thirion, the prefect of Aude, said people were stranded on rooftops and would have to be evacuated by air because it was too dangerous by boat.
One person was injured, he added, when a house collapsed in the locality of Cuxac.
The floods are the worst the Aude river has seen in more than 100 years, according to the weather monitoring service Vigicrues.
Seven helicopters and 700 emergency service workers have been deployed, according to France's Prime Minister Édouard Philippe, who says he will visit the area if conditions allow.
The BBC's Chris Bockman says heavy rain in the region is not uncommon at this time of year, but it has been exacerbated by growing numbers of homes being built on flood plains.