An official autopsy shows that Brown was shot in the hand at close range and also confirms that tissue from Brown was found on the exterior of the driver’s side of Wilson’s vehicle. An accompanying report also shows marijuana in his system. St. Louis medical examiner, Dr. Michael Graham:
Someone got an injury that tore off skin and left it on the car. That fits with everything else that came out. There’s blood in the car, now skin on the car, that shows something happened right there. The detection of THC in the postmortem blood of Brown really indicates his recent use of marijuana (within a few hours) and that he may or may not have been impaired at the time of his death.