Fire at Notre Dame Cathedral

3:38 p.m. ET, April 15, 2019

400 firefighters mobilized for Notre Dame blaze 

The French Interior Ministry said 400 firefighters have been mobilized to deal with the Notre Dame blaze. The cathedral's iconic spire collapsed earlier this evening. The central spire was built in the 19th century amid a broad restoration effort, partly buoyed by the success of Victor Hugo's novel "The Hunchback of Notre-Dame" in 1831.

Pompiers de Paris/Twitter

Pompiers de Paris/Twitter

3:18 p.m. ET, April 15, 2019

President Trump on the "terrible, terrible fire"

US President Donald Trump said Notre Dame's famous cathedral was struck by a “terrible, terrible fire."

“When we left the plane, it was burning at a level that you rarely see a fire burn,” he said, referring to his trip from Washington to Minnesota for a tax-day roundtable with business leaders. 

The President lamented the damage to the historic cathedral.

“That’s beyond countries, that’s beyond anything,” he said. “It’s a part of our culture.”

He said the fire would put “a damper” on the tax roundtable he was about to begin. 

Listen to President Trump here:

5:27 p.m. ET, April 15, 2019

"Paris without the cathedral is not Paris anymore," witness says

Patryk Bukalski was at a café near the Notre Dame Cathedral when he started smelling smoke.

“A bartender said the Notre Dame is on fire, so I left and saw this horrible picture,” he told CNN over Instagram, where he posted a video of the burning cathedral.

He said people are standing outside, just watching and crying. “It’s horrible. It’s a symbol of Paris,” Bukalski said. “It’s just sad. I don’t know what more to say.”

At the scene: It is eerily quiet. Hundreds of people are lining the Seine watching the fire, but they are silent. Police have pushed people back, even telling residents they can’t go to their homes.

“In Paris, it’s a monumental symbol -- every person with different religions are really moved and saddened," said another witness named Anne Marie, speaking with tears in her eyes.

"Paris without the cathedral is not Paris anymore," she said.

See the crowds here:

5:27 p.m. ET, April 15, 2019

Macron has arrived at Notre Dame

French President Emmanuel Macron has arrived at the historic Notre Dame Cathedral, where a fire rages on.

He was accompanied by Mayor Anne Hidalgo, Prime Minister Edouard Philippe and first lady Brigitte Macron, as well as the Paris prosecutor.

5:28 p.m. ET, April 15, 2019

Embers and ash are falling from the Paris sky

Witness Elaine Leavenworth said ash and embers were falling from the sky as a fire tore through the iconic Notre Dame Cathedral in Paris.

Leavenworth said she felt droplets of water as firefighters worked to douse the flames.

She shared this photo of a tiny piece of debris in the palm of a hand:

2:42 p.m. ET, April 15, 2019

Paris prosecutor opens investigation into Notre Dame fire

The Paris prosecutor has opened an investigation into the Notre Dame fire, a spokesman tells CNN.

The fire broke out Monday evening at the iconic cathedral in the heart of Paris.

2:42 p.m. ET, April 15, 2019

London mayor: City "stands in sorrow" with Paris

 Leon Neal/Getty Images

 Leon Neal/Getty Images

London Mayor Sadiq Khan said the city "stands in sorrow" with Paris.

“Heartbreaking scenes of Notre Dame cathedral in flames. London stands in sorrow with Paris today, and in friendship always,” Khan wrote on Twitter.