SANFORD, Florida (CNN) -- An affidavit of probable cause in Florida's case against George Zimmerman for the shooting death of an unarmed 17-year-old says that the neighborhood watch volunteer "profiled" the victim, Trayvon Martin, and disregarded a police dispatcher's request that he await the arrival of police.
The affidavit, which was drawn up Wednesday but not made public until Thursday, was prepared by investigators for the state attorney, who charged Zimmerman with second-degree murder Wednesday.
Zimmerman's relatives say that he did not profile Martin and that he shot him in self-defense.
The affidavit offers little new about what happened on the night of February 26, when Martin was returning to the Sanford house where he was staying after having walked to a nearby convenience store, but it may offer some insight into how the special prosecutor views the case.
"Martin then walked back to and entered the gated community and was on his way back to the townhouse where he was living when he was profiled by George Zimmerman," the affidavit says. "Martin was unarmed and was not committing a crime."
It says that Zimmerman, who lived in the same community, was in his vehicle when he saw Martin "and assumed Martin was a criminal. Zimmerman felt Martin did not belong in the gated community and called the police. Zimmerman spoke to the dispatcher and asked for an officer to respond because Zimmerman perceived that Martin was acting suspicious. The police dispatcher informed Zimmerman that an officer was on the way and to wait for the officer.
"During the recorded call Zimmerman made reference to people he felt had committed and gotten away with break-ins in his neighborhood. Later while talking about Martin, Zimmerman stated 'these a**holes, they always get away," and also said 'these f****** punks.' "
As the incident was unfolding, Martin was on the phone with a friend, the affidavit says. "The witness advised that Martin was scared because he was being followed through the complex by an unknown male and didn't know why. Martin attempted to run home but was followed by Zimmerman who didn't want the person he falsely assumed was going to commit a crime to get away before the police arrived. Zimmerman got out of his vehicle and followed Martin. When the police dispatcher realized Zimmerman was pursuing Martin, he instructed Zimmerman not to do that and that the responding officer would meet him. Zimmerman disregarded the police dispatcher and continued to follow Martin who was trying to return to his home.
"Zimmerman confronted Martin and a struggle ensued. Witnesses heard people arguing and what sounded like a struggle."
Calls to 911 captured a voice crying for help; that voice belonged to Martin, according to his mother; the neighborhood watch volunteer's relatives have said the voice was Zimmerman's.
"Zimmerman shot Martin in the chest. When police arrived Zimmerman admitted shooting Martin. Officers recovered a gun from a holster inside Zimmerman's waistband. A fired casing that was recovered at the scene was determined to have been fired from the firearm."
The affidavit says that an autopsy determined that Martin died of the gunshot wound.