Notre Dame on fire

Firefighters in Paris were battling a huge blaze at Notre Dame cathedral on Monday evening.

This is just sad you know. For the history, the beauty of this monument, the iconography, the culture. #NotreDame pic.twitter.com/ELB7rk3d8B

— maya (@me___maya) April 15, 2019

Images on social media showing the roof and spire of the 856-year-old cathedral on Île de la Cité engulfed in flames. The 300ft spire and part of the roof of the building have collapsed.

The moment #NotreDame's spire fell pic.twitter.com/XUcr6Iob0b

— Patrick Galey (@patrickgaley) April 15, 2019

Follow live at:https://t.co/7kk6SpDAXy

— Michael Becker (@MkDBecker) April 15, 2019

The alarm was raised at about 6.30pm on Monday, and the cathedral was quickly evacuated. A major operation was under way, the fire department said, while a spokesman for the Mayor's office said on Twitter that the area had also been cleared.

Mayor Anne Hidalgo described the blaze as a "terrible fire" and urged people at the scene to respect cordons set up by fire crews in order to ensure that they remain safe.

Un terrible incendie est en cours à la cathédrale Notre-Dame de Paris. Les @PompiersParis sont en train de tenter de maîtriser les flammes. Nous sommes mobilisés sur place en lien étroit avec le @dioceseParis. J'invite chacune et chacun à respecter le périmètre de sécurité. pic.twitter.com/9X0tGtlgba

— Anne Hidalgo (@Anne_Hidalgo) April 15, 2019

The fire prompted President Emmanuel Macron to cancel a major address to the nation on Monday evening in which he was expected to outline the government's response to the recent grand debat.

Notre Dame is one of Paris' most popular attractions, drawing an estimated 13 million visitors a year. The cause of the fire was not immediately clear, but officials have said that it could be linked to renovation work. Several statues had been lifted by crane from the spire last week.

Local media reported that police were treating the incident as an accident.

#NotreDame is on fire in a serious way.

Live broadcast via periscope:( pic.twitter.com/7NgZ2zcB8A

— Michael Becker (@MkDBecker) April 15, 2019