Karen Read was acquitted in the killing of her Boston police officer boyfriend John O’Keefe on Wednesday, vindicating a defendant who had claimed to be the victim of a sweeping cover-up across two divisive trials.

Karen Read walked out of court a free woman after more than three years and two trials over the death of her boyfriend, Boston police officer John O'Keefe, who was found on the lawn of a fellow officer's home after a night of heavy drinking.

A jury cleared Karen Read of the three most serious charges brought against her, second-degree murder, manslaughter while operating under the influence, and leaving the scene of a crash resulting in death.