Mafia 72. "Little Green Man" Bar

Related: Alex is either the Host, the Guardian, or a copy-paster.

There's another possibility where Alex could also be a Scientist (like the roles mentioned above), but in that case, the Policeman killed him, and that's why the text mentions an unknown person, because the Policeman is an outsider. So, it might be a hint about the role, or it might not be. But where is the Mafia kill then? Poison or Night? It's unlikely that the Mafia would block their own member, especially a killer, so I don't consider Wolfie in this case.