I said yesterday that the drone attack was likely pro Prigozhin or by another oligarch we don't know about who wanted to embarrass the current regime. The attack was sumbolic, causing very little damage and no injuries or deaths. It pointed out how piss poor the air defenses around Moscow are while alarming the residents. It was more serious than the fireworks drone over the Kremlin, it did do som actual damage, requiring window replacement.
Russian TV was predicatbly hilarious, reporting 8 drones in the AM, 5 shot down. By late night it was 50-60 drones, most shot down, video of a huge explosion in Mariupol offered as proof of a shoot down.
In any case, this is proof that someone out there is trying to humiliate Putin and his high military command. Prigozhin has been talking smack about them for weeks, so he's Suspect #1. He's far from the only one. About the only ones off the hook are the Ukrainians, who had absolutely nothing to gain from a symbolic attack like this one. They'd have bombed something important and totally obliterated it.