More than 400 French firefighters worked through the night to ‌contain a wildfire in the historic Fontainebleau forest south of Paris, and authorities sent two waterbombing planes on Monday to tackle the blaze as a heatwave gripped western Europe.

The fire broke out alongside ​a highway near Fontainebleau, home to one of France’s best-known royal palaces, which ​once served as a hunting lodge and autumn residence for past monarchs. ⁠

By midnight, the flames had scorched more than 800 hectares, fanned by hot ​winds.

Just 70 kilometres from Paris, the blaze forced the closure of the A6 highway ​linking Paris with Lyon and the south.

Smaller fires in the area also disrupted high-speed train services.

“The fight continues today,” the French fire service said on X. Local residents have been warned that the Canadair ​planes will have to scoop water from the river Seine, which flows through central ​Paris.

European countries are worried about increasingly frequent heatwaves and record-breaking temperatures.

Most scientists say the fires are ‌driven ⁠by climate change, with large swathes of continental Europe parched.

Wildfires have already ripped through regions of France, Spain, Portugal and Greece, charring thousands of hectares of land.

The death toll from a blaze that swept through Spain’s southeastern Almeria province rose to 13 over the ​weekend, when a 93-year-old British ​woman died of ⁠burns.

Western Europe is gripped by its third prolonged spell of baking temperatures this summer.

A heatwave in late June likely killed thousands of ​people, with countries reporting more than 10,000 excess deaths.

Power supplies ​were disrupted, ⁠schools shut and temperature records broken in France, Spain and Britain.

“To have this kind of excess at this time of year is unusual. It’s really high,” said Lasse Vestergaard, chief ⁠physician at ​Denmark’s Statens Serum Institut, which hosts EuroMOMO, a Europe-wide ​mortality surveillance system.

“It is difficult to explain this high excess mortality by anything but the extreme heat,” Vestergaard ​told Reuters.