http://www.bbc.co.uk/news/world-us-canada-18111988
A Florida neighbourhood watch volunteer who shot an unarmed black teenager had a bloody nose and a cut on his head, according to police reports.
The documents were released to defence lawyers for George Zimmerman, who is accused of second-degree murder over the 26 February killing in Sanford.
The file includes autopsy evidence that traces of a cannabis ingredient were found in Trayvon Martin's system.
Mr Zimmerman, 28, maintains he shot the 17-year-old in self-defence.
He was not arrested for several weeks after the shooting because he invoked Florida's "stand your ground" law, which allows deadly force in the face of a serious threat.