A Boston police officer's testimony in Karen Read's trial raises questions of coercion, as the defense seeks to undermine the investigation into John O'Keefe's death.

Defense testimony continues in the Karen Read re-trial in Boston, as a new witness is called to the stand. Read is accused of fatally striking her boyfriend, Boston Police Officer John O’Keefe, with her SUV and leaving him to die in the snow outside another officer’s home in 2022.