Fire breaks out in spire of medieval cathedral in French city of Rouen

French authorities say a fire broke out at the medieval cathedral, pictured here in 2016, in the Normandy city of Rouen (Michel Euler, File/AP)

A fire has broken out in the spire of the medieval cathedral in the French city of Rouen, authorities said.

Mayor Nicolas Mayer-Rossignol posted on X, formerly Twitter: “The beginning of a fire is underway on the spire of the cathedral of Rouen. The origin is unknown at this stage. All public resources are mobilised.”