Notre Dame...accident or terrorism? Should we keep an open mind or jump to conclusions?
On the other hand, there was the construction and the fire looked big at the scaffolding indicating it could have een started by a careless worker with a blow torch. I don't know the sequence but it looked like the lower roof was already gone so that image may be misleading.
Don't get all uppity. This is a legitimate question and shouldn't be ignored but of course, we have no evidence. However, I've seen several media outlets speculating that it was an accident from the construction.
I've also seen the yellow vest movement blamed. Other than that, I've seen zero mention of possible terror.