Yeah, Zubr has been acting like a maniac for a while now, so we'll stick with this, very sad version for the town (there's no balance, guys, no balance).
Based on what I've seen, I can tentatively say who I suspect are the mafia. It's Arandor, Revan, Pobeditel/Gur (one of them, most likely the first), and probably Nefela too. Nebo is also a possibility, of course. I'll fill out the table now and give you a more precise answer.