Holy cats, was there not so long ago ... and a family member was literally just there a week ago!
That will be a huge loss, not just the Cathedral, but anything close by (and everything is cheek by jowl on the island). You can see the Palais de Justice lit up (with lights not fire) in the background of one photo - and the Conciergerie is just next door and Sainte-Chapelle. Really like Sainte-Chapelle.
Oh that is just so sad, going to have to revisit my Paris photos this evening!
another link to add to Alison's - includes video and photos -
https://www.cbc.ca/news/world/notre-dame-paris-fire-1.5098604