Huge fire breaks out at Notre-Dame Cathedral in Paris

Breaking news: Notre-Dame Cathedral in Paris has caught fire, with flames visible from the roof and firefighters attending the scene.
Images have emerged showing the upper parts of the gothic cathedral engulfed by flames. According to witnesses, the roof and the 90-metre-high spire have completely collapsed.
Paris mayor Anne Hidalgo has described it as "a terrible fire" on her Twitter page, and urged onlookers to respect the security boundaries in place while the fire brigade tackles the bl