At the retrial of Karen Read, charged with second-degree murder in the death of Boston police officer John O’Keefe, the focus was on the conduct of former Massachusetts state trooper Michael Proctor, who managed the investigation and was later fired for misconduct. Proctor’s supervisor, Sgt. Yuri Bukhenik, testified that while he was also disciplined, he believed Proctor handled the investigation with “honor and integrity,” despite acknowledging Proctor’s unprofessional comments about Read. The defense claims Read is innocent and was framed, suggesting O’Keefe was beaten and dragged outside, while prosecutors allege she fatally struck him with her SUV after a drunken argument.