Trayvon Martin was killed by a single gunshot fired from an "intermediate range"—evidence suggests just inches away from the skin—according to an autopsy report reviewed by NBC. George Zimmerman has told investigators that he fired the shot while he was on his back as the teen straddled him, CBS notes. The only other injury the autopsy found on Trayvon was a small abrasion, about a quarter-inch in size, on his left ring finger below the knuckle. Zimmerman had two black eyes and a busted nose the day after the shooting, according to a report from his family doctor. Zimmerman has said Martin attacked him before the shooting.