Khaan is usually a lynch bait as lots of people consider him scummy..

So Ichigos accusation seems logical to me, although there is a possibility of cunning tactics.

In a 15 people standerd game, there should be at least 2 mafias and possible SK (although its not mentioned)

The only person who will fit the "fairly new" category would be Captain Blackadder. Surely his partner would've disagreed.

My conclusion is that it was done by a cunning player who knows what will confuse the town...

Also Reenk was attacked by Fried potatoes? Why would getting hit by our beloved Fried potatoes take his life?