LOUISVILLE, Ky. (WHAS11) -- A new report shows criminals cost victims and taxpayers more than $4.2 million after rape kits went untested.

A Kentucky committee looked at the first 1,000 kits tested. It totaled up the economic costs of crimes committed by offenders identified as part of an effort to test Kentucky's backlogged rape kits.

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The study found 87 offenders went on to commit additional crimes after the original assaults including manslaughter, assault and robbery.

The report also shows a need to increase funding for the state police forensic lab and higher pay for analysts.

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