The Los Angeles sheriff's office has acknowledged it doesn't know how many of its 5,600 evidence kits from rape cases are unprocessed. Sheriff's Cmdr. Earl Shields told the county Board of Supervisors on Wednesday that the department will prioritize examining the kits that have been in storage the longest. Kits that have not been examined within 10 years will expire and can't be used to prosecute suspects due to the statute of limitations.

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