Looks like a soft storey failure from the before photos - the ground floor shop looks like it has no interior walls. Happens commonly in earthquake zones, and here, losing the lateral support of the adjacent building may have been enough for it to creep until it collapsed.
Alternative sources: A few among the 100s of non-paywall sites:
https://abc7ny.com/live-updates/brooklyn-building-collapse-l...
https://www.cnn.com/2026/11/11/us/live-news/brooklyn-buildin...
https://www.bbc.com/news/articles/cm20v66jq611o
Looks like a soft storey failure from the before photos - the ground floor shop looks like it has no interior walls. Happens commonly in earthquake zones, and here, losing the lateral support of the adjacent building may have been enough for it to creep until it collapsed.
It may well have had interior walls at some point; it's possible that some landlord decided that they were superfluous (to him).
Another one?
No same one