JACKSONVILLE, Fla. -- Newly released information in the George Zimmerman case shows a clearer picture of the night Trayvon Martin was shot and killed.

The State Attorney's office released hundreds of pages of documents, pictures and interviews Thursday.

Pictures show the crime scene and items laying in the grass, such as keys, a plastic bag, and the bullet casing. Others show the gun used to kill Martin. One series of pictures shows Zimmerman's injuries, which include lacerations to his face and the back of his head.

SLIDESHOW: Zimmerman Discovery Photos

In an interview with investigators, one unidentified emergency responder said, "He had cuts and abrasions on his face, his nose looked like it had some damage and he had a cut on the back of his head, and we basically just cleaned him up."

George Zimmerman's father, Robert Zimmerman, told FDLE investigators in an interview he and his family have received death threats. At one point, he said the voice heard yelling for help on a previously-released 911 recording was not Trayvon Martin.

"The 911 tapes and the other tapes were played for the Martin family and they identified that as their son crying for help," Robert Zimmerman said. "That is absolutely, positively George Zimmerman."

Extensive police reports showed 11 witnesses. Several of those witnesses told police they saw two figures outside, one pursuing the other, and heard the shot.

"Saw a fistfight, just fists, I don't know who was hitting who," one unidentified witness said. Went back to turn the stove off and by the time I walked back I heard the shot."

One witness told police he saw "a black male, wearing a dark colored "hoodie" on top of a white or Hispanic male and throwing punches 'MMA (mixed martial arts) style.' He stated he yelled out to the two individuals that he was going to call the police. He then heard a 'pop'. He stated that after hearing the 'pop', he observed the person he had previously observed on top of the other person (the black male wearing the 'hoodie') laid out on the grass."

One report also stated one Sanford, Fla. detective believed probable cause existed to charge Zimmerman with manslaughter. The detective told prosecutors that the fight between Zimmerman and Martin could have been avoided if Zimmerman had remained in his vehicle and awaited the arrival of law enforcement. He said Zimmerman, after leaving his vehicle, could have identified himself to Martin as a concerned citizen and talked to him instead of confronting him.
   
He said there is no evidence Martin was involved in any criminal activity.  The officer's name is not legible in the report.
   
Zimmerman was eventually charged with second-degree murder for the shooting of the 17-year-old Martin, who was unarmed.  Zimmerman has pleaded not guilty, citing self-defense.

First Coast News