Rick would already be dead, as both his special abilities and his neutral ability would be gone. The Doctor and the "patients" are not infected. The infection is not visible on Lee. That leaves Rook or the maniac.
Regarding the Doctor and the first Mafia member, I'm confused; it seems like Lyuska couldn't have claimed them.
Added 11 minutes later
What joy does Jack get from the fact that the Cop locked himself? The town is guaranteed to lose a vote.
At least until the recruitment, the move would definitely be questionable.