I saw one news blurb that gave some hope...BUT

no confirmation, no other mention... that is: Many of art objects, relics, etc. have been saved. I saw this on Twitter BUT not another word about it on the news channels I'm scanning. If that was true certainly it would be top news, it seems to me.

As to what started it... again, one mention that I saw saying it was from the renovation project. That would certainly seem logical to me. - JamesJM