Jennifer McCabe took the stand in Karen Read's second murder trial, recounting the frantic moments before discovering John O'Keefe's body in the snow.
McCabe shared details about Read's behavior, the search for O'Keefe, and concerns about hitting him.
Her testimony is crucial in determining whether Read killed O'Keefe or was framed for his murder.
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Proceedings paused for lunch, with the defense team expected to resume cross-examination of McCabe.
Defense attorney Alan Jackson questioned McCabe's credibility in interactions with investigators.
Prosecutors played McCabe's 911 call from the morning they found O'Keefe.
McCabe's testimony detailed the events leading up to O'Keefe's death and her relationship with Read and O'Keefe.
Watch the trial live on CourtTV.
Contributing: Jessica Trufant, USA TODAY Network