Damn, there's a lot to make sense of... I'll try my best to figure out what happened:
Falcon095 was targetted by the mafia (that's the easy one)
nordlead was poisonned by a poisonner (duh!)
dtewi (Vigilante) , dsister44 (Mafia Hitman) and SciFiBoy (Cop) could have targetted a paranoid gun owner (but then again what kind of vigilante shoots on the first night) --> if that's the case the PGO is a high profile player or a known lurker or someone switched place with a high profile target.
That's leaves Son1x, Vetteman94 and hatmoza unaccounted for. Which would be mean 3 serial killers and/or stupid-trigger-happy-vigilantes.
That's pretty f'ed up right there.
Btw, I'm not saying that's exactly what happened I'm just trying to make a plausible scenario in my head.
Signature goes here!