A judge has ruled on whether convicted killer Scott Peterson's lawyers can retest evidence for DNA. 

KCBS Radio's Kris Ankarlo reports, the defense wants the testing as part of the quest for a new trial.

Pool / Pool / Getty Images

A judge has ruled on whether convicted killer Scott Peterson's lawyers can retest evidence for DNA. 
KCBS Radio's Kris Ankarlo reports, the defense wants the testing as part of the quest for a new trial.
Pool / Pool / Getty Images

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