Mafia 103. Ice and Ash

What are your current assumptions in case:

a) The Investigator turns out to be a town member?
b) The Investigator turns out to be a Mafia member?

In case a), among my likely Mafia suspects are Neyra and Rimpel (I have more Mafia roles assigned to him than town roles, due to the block). Possibly Uran, but I'm giving him some leeway because it's unlikely that a Mafia member would be so aggressively voting for a town member on the second day.

b) Here, suspicion should most likely be directed towards Tox (promised to speak up but didn't), Vish (promised activity on the weekend), and me (voted NNV (based on clues like the second conscience wouldn't allow me to vote)). Among the voters, there should also be 1-2 Mafia members. The main focus should be on those who cast their votes early and those who cast their votes last.

What are your assumptions about this?

Investigator, please outline all your views, preferably regarding each player, as the day is not yet closed. This is better than nothing.