He ws holding out on property developers, and then suddenly ended up decapitated in his flat, by a chainsaw.
Apparently that's not suspicious. Not in the slightest bit. All those murders out there have been doing it wrong, apparently the best way to kill someone and get away with it is to do it as blantantly as possible.
"theres no way this could have been murder, no-one would have been blatant enough to cut out his heart with a spoon! Suicide...case closed!"