Updated:SANFORD, Fla. —
The Department of Justice on Thursday put a hold on all evidence in Trayvon Martin's killing.
The announcement came after federal investigators began asking for the public's help as they try to decide whether Zimmerman violated Martin's civil rights.
Zimmerman was found not guilty Saturday of second-degree murder in the 17-year-old's killing.
Among the evidence being held at the Sanford Police Department is Zimmerman's handgun.
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