Oz-Rita has this to say about the building:
One of the most beautiful buildings in the most exclusive “Ile de St. Louis” burns – owned by an “emir” […] one of my favorite places in Paris
No word as to cause. Which pretty much leaves it to our imaginations within the context of what we know about, for example, small cell jihad, or, artifacts from the time of ignorance (pre islamic rule) and so on. Hopefully Oz-Rita will track this story for us as news breaks as to the cause. Of course, it could just be an accidental fire. They do happen. I just tend to lean towards islam when no information is given as that is the new code now that we have all caught on to ‘youths’, ‘Asians’, and most comically of all, ‘violent extremists’.