PARIS — A fire broke out at the Cathedral of Notre-Dame in Paris on Monday evening, according to the French authorities and witnesses.
André Finot, a spokesman for the cathedral, said in a telephone interview that the spire of the cathedral had caught fire. The cause of the fire remained unknown, and there was no immediate indication that anyone had been hurt.
The fire alarm went off around 6:30 p.m., Mr. Finot said, adding that the cathedral had been evacuated.
Video filmed by onlookers and shared on social media showed smoke and flames billowing from the top of the cathedral, engulfing scaffolding and the spire.
Mayor Anne Hidalgo of Paris said on Twitter that “a terrible fire” had struck at the cathedral.
“The Paris firefighters are currently trying to stop the flames,” Ms. Hidalgo said. “I ask everyone to respect the security boundaries.”
Firefighters were on the scene, said Mr. Finot, who was about 70 feet away from the cathedral.
The Paris police warned people to stay away from the area around the cathedral, which is one of the city’s most famous landmarks, drawing about 13 million visitors a year.
Built in the 12th and 13th centuries, the cathedral is currently undergoing extensive renovation work. Last week, several statues were lifted by crane from the spire.
President Emmanuel Macron of France canceled a major speech that was scheduled for Monday evening, in which he was supposed to announce measures addressing the Yellow Vest protest movement that has roiled the country over the past months.