"I already believed him before I heard him, but I needed to hear it from him."
Oliver wouldn't reveal details of their conversation or Zimmerman's version of events that led up to the shooting, he did have this to say.
"But this was not a racial profiling case. Something bad happened from the time George saw Trayvon and from the time the two came face-to-face," he said.
Oliver says Zimmerman has been told by Sanford Police not to talk publicly about what happened. A grand jury will hear evidence in the case and decide if Zimmerman should face any charges when they convene April 10th.
"He's just now realizing how big this is because up until this point he's been assured that he acted within the law. There's some evidence that's going to come out once the grand jury convenes that goes even beyond that," said Oliver.
Zimmerman's attorney says his client had a broken nose, injuries to the back of his head, and grass stains on his shirt that support his claim of self-defense. After hearing 911 calls from neighbors, where someone can be heard screaming for help right before the gunshot, Trayvon's parents think it's his voice, but Oliver said that's his friend, George Zimmerman on the tapes.
"That was George's voice. I'll be the first to say I don't know Trayvon's voice, but I do know George's voice and I feel confident that that was his."
Both Zimmerman's attorney and friend say when everything in the case is finally released, it will exonerate him and prove he acted in self-defense.
"When the evidence comes out I think a lot of people will be surprised as to what happened," Oliver said.