SANFORD, Fla. (CNN/WKMG) -- We now have video of some of Florida teen Trayvon Martin's final moments before being fatally shot by neighborhood watch volunteer George Zimmerman back in February. And we're seeing new photos of Zimmerman's injuries after the incident.

The photos are among a group of documents released in the discovery phase of the second-degree murder case. At issue: whether Zimmerman acted in self-defense in a confrontation with Martin.

In video released by 7-11, you can see Trayvon Martin at a store in Sanford, Florida where he bought Skittles and an iced tea.

He was shot by George Zimmerman a short time later on his way back to the home of his father's fiancé where he was staying.

And also released are photos of Zimmerman after the shooting. A fire department report says Zimmerman had cuts on his forehead, a bleeding and tender nose and a small cut to the back of his head. An attorney for the Martin family responded to Zimmerman's injuries. Daryl Parks says, "Trayvon had to fight a guy who was armed, so the level of injuries that we see in this particular case, yes he had some injures, but they're not life threatening injuries."

Also among the newly released documents, the autopsy says Martin had trace amounts of THC, the psychoactive ingredient in marijuana, in his system.

Another Martin family attorney said that's irrelevant, and wondered if Zimmerman had anything in his system. The autopsy also says Martin was shot in the chest from an "intermediate range" or within thre feet. And it lists the manner of death as homicide.

Zimmerman's attorney offered a general reaction to the documents. He says, "We knew it was coming. Its several pieces of the puzzle that we now have to put together, I would only ask that everyone wait until we have the whole pieces, all of them together, to look and see what the whole picture is."

Also among the evidence, a police document said Zimmerman could have avoided the encounter if he had stayed in his car and waited for police to arrive, after he called 9-1-1.

Zimmerman's attorney responded the incident also could have been avoided if Martin was not in the complex.