Firefighters in Paris, France are struggling to control a fire blazing from the Notre Dame Cathedral, which has caused the spire to collapse Monday evening.

According to CNBC, the cause of the fire is not yet known, and Paris Mayor Anne Hildago is urging people to stay away from the cathedral’s area.

“The Paris firefighters are currently trying to stop the flames,” Hidalgo said. “I ask everyone to respect the security boundaries.”

People on social media have been sharing their thoughts about the historic cathedral, and have expressed their condolences for the landmark.

This is an updating story.

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