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Florida police said Tuesday they were continuing to investigate an apparent road rage shooting involving George Zimmerman as authorities released a partial clip of a 911 call made after the incident.

No charges have been filed in the Monday's shooting in the Orlando suburb of Lake Mary — and neither Zimmerman nor his alleged assailant have been charged, a police spokeswoman said. Both men have hired lawyers and have yet to give statements.

Police are also looking for witnesses to the shooting, which the police spokeswoman said happened on a busy commercial street.

"It will be a slow, methodical process in that the detectives are conducting an impartial investigation," the spokeswoman, Bianca Gillett, said.

A police report on the incident indicates that detectives are investigating it as an aggravated assault with a deadly weapon "without intent to kill."

Police documents released Tuesday show that Zimmerman flagged down an officer around 12:40 p.m. ET and said someone had just fired a gun at him while he was in his car. At the same time, the police received a 911 call about the same incident, in which Zimmerman's assailant, identified by police as Matthew Apperson, claimed he had shot at somebody.

Police searched Apperson's car and found two guns, including a .357 caliber revolver with one spent casing. Police also recovered a gun legally owned by Zimmerman, but have not yet completed their search of his car.

In a partial recording of a 911 call from an uninvolved bystander, the caller said that a man had just told him that he "had to shoot someone from his window and wants the police to come."

"He’s kind of outside on the street, he’s just standing out here," the caller said.

The dispatcher asked the caller what kind of car the man was driving, and the caller said it was an Infiniti. The caller than added, "He said ... it was George Zimmerman."

The 911 call has a second half that has yet to be released to the public.

Zimmerman was hit in the face with glass and debris, police told NBC affiliate WESH. He was taken to a nearby hospital but was not injured, police said.

The cause of the fight wasn't clear. Police Chief Steve Bracknell told WESH that the shooting may have been related to an "ongoing dispute."

Zimmerman was arrested in January after police said he threw a wine bottle at his girlfriend. Prosecutors declined to bring charges after the woman recanted her statement.

Zimmerman filed a defamation suit against NBC News in 2012. A judge dismissed that claim last year, and Zimmerman has appealed.

In 2013, Zimmerman was acquitted of second-degree murder by a Florida jury in the shooting death of Trayvon Martin, an unarmed teenager. The Justice Department closed its investigation of the killing earlier this year and declined to bring civil rights charges against Zimmerman.

— Jon Schuppe