Hmm, Poka and Mellow still aren't fully in the clear yet. Thing is, and I hope, the Cop probably investigated either Mellow or Poka last might (hopefully Mellow), which would mean a negative impact result would prompt an immediate claim from the Cop, but I don't see one. There is also the chance that Mellow could be the GF, and that's why he's rather confident about being investigated, but that's unlikely.
I do have a post lined up about another target, but I'll write that later or something. I think Mafia are being very passive this game, so that's a hint right there.