Mafia 30. Yakuza Clans war.

I'll give you a plus, even if you're a mafia member :P

This is a clear giveaway! Think about it! Arandor is not a murderer and not the leader of the blue team! If the note is real, he cannot be executed. If not, then it's just a red herring! Our attention is being deliberately diverted from the clues! Then there will be double murders, execute one murderer - and there will be vote stealing! The blue team has already won if no one pays attention to this!