1) The blockers are working well.
2) The Mafia is killing calmly (maybe the second time it was a Pirate, but it's too obvious, and there's no clear evidence pointing to their role; this is a characteristic of the Mafia).
3) There's no evidence, so we don't know who to accuse.
So, we'll have to wait:
1) Until there's evidence against the Mafia.
2) Until someone from the Mafia kills someone else.
Because too many people are acting suspiciously.