Some obvious questions.
Were there workers present where the fire started?
Were there workers present anywhere in the cathedral, or other personnel?
Are there video cameras all around Paris are is most US cities?
Looks like we’d start hearing some eyewitness accounts soon, rather than the standard and instant denials that terrorism was involved.
Le Monde is reporting that the fire started in the attic/s.
For what that’s worth.
Something as historic as this building would have teams of people cataloging every nail being removed, every stone, every piece of wood, if this were a true historic renovation.
Where were these teams of people? Are there no eye witnesses to the original spark if this happened at an active renovation site?
A spark from temporary lighting or from extension cord would presumably be from a light or a cord being used at the moment. This work would be going on during late afternoon on the Monday before Easter weekend. Is this a heavy workday for a church restoration team, or would the restoration be stopped for church services preparation?
-PJ
Actually, no workers need to be present for a fire to start. I don't know what type of renovation was being done, but a rag with linseed oil can start a fire by itself. Give it a few hours.... then POUF!