(CBS/AP)-- Trayvon Martin's autopsy shows evidence of marijuana in his urine and blood.
The autopsy was among a large amount of evidence released by prosecutors on Thursday as part of the second-degree murder case against the neighborhood watch volunteer who shot him in February.
Other documents include a photograph that shows suspect George Zimmerman with a bloody nose. Zimmerman has claimed self-defense and said he only fired because the unarmed teenager attacked him. He has pleaded not guilty.
A police report says Martin had $40.15, Skittles candy, a red lighter, headphones and a photo pin in his pocket. He had been shot once in the chest and was pronounced dead at the scene.
CBS News correspondent Mark Strassmann reported Wednesday of new details in the case from sources close to the investigation.
Zimmerman: Martin's last words were "it's over"
A responder at the crime scene told CBS News that he and others saw wounds on the knuckles of one of Martin's hands as he lay dead on this lawn, suggesting Martin had thrown a punch.
Zimmerman told police he fired the shot at point blank range while on his back, as the 17-year-old straddled him.
He also told investigators Martin did not die immediately but mumbled either "it's over" or "you got me."
The special prosecutor's case also includes Zimmerman's medical report the day after the shooting. It listed a broken nose, two black eyes and a cut in the back of the head.
A source also told CBS News an unreleased police report noted Zimmerman's sweatshirt had "grass stains, and was wet on the back."