French prosecutors have launched an arson investigation following a major fire at a 15th-century Gothic cathedral in the western city of Nantes on Saturday. The blaze spewed smoke from the front windows of the Cathedral of Saint Peter and Saint Paul, but the damage was mostly limited to the large pipe organ inside. The organ was “completely destroyed”, said the head of the local fire department, Laurent Ferlay. The public prosecutor’s office is now investigating whether arson was the cause and experts from Paris are expected to provide support. The fire broke out in three places, which is probably not a coincidence, Nantes prosecutor, Pierre Sennes, told local radio station France Bleu Loire Ocean. However, no signs of a break-in have been found so far, Sennes said, according to news agenc...