Мафия 23. The Rockland tavern

1) reveals the killer's role if he observes him at the moment of committing the crime or his victim
2) can replace the evidence planted by the killer at the crime scene with his own (even with very light evidence); if the killer does not use additional evidence, the thief can also plant his own (i.e., the main thing is that there are not three pieces of evidence at once)

i.e., the thief can always plant his own evidence (regardless of the killer's additional evidence) and very light evidence, such as this fire mushroom.

Oh, I already talked about this on the previous page, that it could have been the thief's evidence.

I don't think the thief would plant evidence on the first night.
The thief has no reason to plant evidence. Why would he want to frame Kyle? The thief is playing for the town. He has no reason to eliminate players by planting evidence.
It is beneficial for the thief to plant evidence on a player only if he suspects that player of being a bad guy.