Fire has broken out in the famous Notre Dame Cathedral in Paris, police said.

Flames and black smoke were seen shooting from the base of the medieval church’s spire, which is undergoing renovation.

French media quoted the Paris fire brigade saying the blaze is “potentially linked” to the renovation work.

US President Donald Trump tweeted: "So horrible to watch the massive fire at Notre Dame Cathedral in Paris. Perhaps flying water tankers could be used to put it out. Must act quickly!"

Deputy Labour Party leader Tom Watson tweeted: "Absolute tragedy unfolding. I hope the Parisians can save their beautiful Cathedral. #NotreDame"

European Parliament Brexit official Guy Verhofstadt has said he is "so sad" to see "a masterpiece of European gothic is at risk of being destroyed".

He tweeted: "So sad to see the images of the burning #NotreDameDeParis.

"I hope that the Paris fire brigade will get the fire under control as soon as possible.

"My thoughts are with the people of France as a masterpiece of European gothic is at risk of being destroyed."