I'm remembering one case where the police claim this one guy shot himself with a gun they had left in the police car after arresting him for supposedly having drugs.
A few problems with that. One, the guy's hands were handcuffed behind his back. Two, the bullet entry wound was in his front. Three, what the fuck were they doing leaving a gun in the BACK OF THE CAR?
That being said, I wish the police weren't so quick to rule this off as a suicide, at least not without presenting some really good evidence. If his arms and legs were tied, I suspect foul play and the police should, too.