DEDHAM, MASS. (WHDH) - A Mansfield woman accused of backing her SUV into her boyfriend and killing him was back in court on Thursday.

Defense attorneys for Karen Read asked a judge in Dedham to have evidence in the case preserved for independent, forensic testing.

Read has pled not guilty to second-degree murder charges in the case involving the death of 46-year-old John O’Keefe.

A 16-year veteran of the Boston Police department, O’Keefe was found unresponsive in a snowbank by authorities outside of a Canton home back in January.

Prosecutors allege Read hit him with her car after a night of drinking, apparently making a three-point turn when O’Keefe got out of the car.

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