Emergency workers rescued or evacuated hundreds of people in southern France as flash flooding abruptly turned roads and fields into rivers and lakes, the Associated Press reported.

As new heavy rainfall threatened the area Wednesday, the emergency service for the Gard region said rescuers were searching for at least one person reported missing after the Tuesday evening flood.

No casualties have been reported, but local authorities said the rains caused significant damage to homes and infrastructure across towns and villages between Nimes and Montpellier.

About 800 firefighters were mobilized to rescue people via helicopter and other means. Schools across the region were closed as cleanup work started in some towns.