Isn't that the whole point of the game? I would assume that would be fine.
EDIT: Now that I think about it, framing someone and getting them wrongly convicted would technically count as murdering every other living player left, so I REALLY don't think that counts.
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Xbox GT/PSN name: TatteredUniform
http://www.scuffletown.org/wp-content/uploads/2010/05/tRBE1.gif