It’s not easy to place a gun to your temple and shoot yourself in the head when your hands are handcuffed behind your back, but that’s what police report a 21 year old black man having done in the back seat of a police car after twice being searched for weapons. If ever a case required an outside investigation, this is it.

http://www.npr.org/blogs/thetwo-way/2012/08/20/159416070/death-of-handcuffed-man-in-police-car-ruled-a-suicide?sc=17&f=1001