A fast-moving wildfire reached the outskirts of Marseille, France’s second-largest city, on Tuesday, leading its airport to be shut down, with residents told to stay indoors and shut all openings to be safe from the smoke.

Over 1,000 firefighters were sent to battle the blaze that started near Les Pennes-Mirabeau and quickly spread toward the city of Marseille.

Flights to and from Marseille have been suspended and traffic at the city’s main train station was disrupted due to a wildfire near the southern French port city.