Mafia 72. "Little Green Man" Bar

By the way, I've been saying for a long time that Rimpel should be executed, and that he's the mafia.

Well, he actually said it himself.
I couldn't quite figure out the clues. Could it be that the Cardiff City football club from Cardiff, which has a dragon on its emblem, is a clue about Rimpel?
With Prague, it's a complete dead end.

But who is the maniac?

Sincerely,
Gur

I still think it's Ment or Alex. But considering Ment's merits for the city and everything else, we execute Alex.

Added 22 minutes later
Although, no, Ment was blocked yesterday, so it must be Alex.