So, to recap, we have a likely town Jail Officer (possible Interrogator, but I think that's increasingly unlikely since that would mean scum have 3 different modes of killing targets all accessible in a single DP/NP cycle) who killed another town player, and scum have a Blackmailer who is set to kill Oberon by the end of the DP.
It's possible there are three scum players and a TP, but I think that would require them to be able to win with town and I can't see them being the Gunsmith (lot of killing roles around), so that would basically have to be the Associate.
It's also possible there are two scum players and a TP that's more of a wild card, in which case we've got a broader assortment of possibilities.