Could it be the power breaking off?

Looks like Cthulhu

Look at the bright flashes before the collapse. Note the speed of the fall once the building starts to fall.

Lady I heard it caught fire

Honestly looks like some sort of sinkhole situation. Took out the middle, left both the right and the left hand side at first, then those kinda tilt inwards like the hole was expanding.

The flashes could be from electrical shit going haywire, I dunno.

The thing is, I watched many a TLC show on demolitions, and in the best case scenario they take a shit ton of time to set up. They generally gut the building too. There's a shit ton of wires everywhere and charges around every pillar. It's very noticeable.

Now, maybe we have technology that can do it without all these things... But I dunno I think that's a stretch here. Even if you wanted to kill someone in the building, seems a bit extreme. Like, there's psychos that would, but it just seems too much.

With no real goal or "terror attack" theme, or something to make people afraid (other than living in Florida on swampy land lol) I just don't jump to demolition. Way too slow and sloppy for this.

But who knows.