A controversial 911 call is now the focus in the case of 17-year-old Trayvon Martin, who was shot and killed by a neighborhood watch captain.

Martin's family attorney says that recording will clear up what she believes really happened.

"I think we're going to hear that this was not a case of self-defense,” says Natalie Jackson. “This is a case of Geroge Zimmerman stalking Trayvon Martin."

The shooting happened All-Star Weekend at the Twin Lakes gated community in Sanford. Police say 28-year-old George Zimmerman was patrolling the neighborhood when he spotted Martin. Zimmerman called 911 asking for backup, because he believed Martin appeared suspicious.

So far, the 911 recordings haven't been publicly released. However, Jackson says she has numerous tips from people claiming to have ties to the Sanford Police Department. Those people say they know what’s on the tapes.

“When asked what made Trayvon suspicious to George Zimmerman he said, because he's black and he has a hoodie on,” Jackson said a dispatcher told Zimmerman not to do anything and his response was 'but they always get away.'

"That is just what we've heard from people. I have not heard the tape, I don't know if that is on the tape, but that is the incriminating stuff that we believe might be on the tape, and the reason why we would want the tape.”

Minutes after the call, police say there was a scuffle and Zimmerman shot the 17-year-old. Zimmerman claimed the shooting was in self-defense.

Sanford Police have not recommended criminal charges against Zimmerman, saying right now there is not enough evidence. News 13 asked a department spokesperson to comment on Jackson's statement regarding the 911 calls, but he declined.

We also attempted to contact George Zimmerman for a comment but were unable to reach him.

Nevertheless, Jackson believes the evidence is in the 911 calls.

"I think the 911 calls will shed light on the fact that George Zimmerman was asked to stay in his car,” Jackson said. “He disregarded that and in two minutes Trayvon was dead."

Although Sanford Police are finished with their investigation they still will not release the tapes or say what is on them.

Tuesday afternoon police gave the case to the State Attorney’s Office. Attorneys there will determine whether Zimmerman will face criminal charges.

Jackson has filed court documents forcing investigators to release the tapes. She expects a judge to made a decision later this week.