Read, 45, is accused of fatally striking Boston Police Officer John O'Keefe and leaving him to die in the snow outside another officer's home after a night of drinking in January 2022. She's charged with second-degree murder, manslaughter and leaving the scene outside Boston.

The Karen Read trial on Friday focused on controversial testimony about the alleged collision involving Read's SUV and John O'Keefe.

For the final test, ARCCA used a dummy weighing about 200 pounds. A collision between the dummy and the SUV at that speed completely shattered the rear window, dented the SUV liftgate, and popped out the bumper window, Wolfe said.

Read is accused of striking John O’Keefe with her SUV and leaving him to die alone in a blizzard outside of a house party in Canton.

Karen Read's defense gains momentum as plow driver testifies he did not see a body where prosecutors allege she left her boyfriend, John O'Keefe, to die in the snow.

Dever, who worked in Canton at the time of Read’s arrest, was called by the defense Monday morning. On the stand, she faced aggressive questioning from Alan Jackson, one of Read’s lawyers, about a statement she made to federal investigators looking into the death of Read’s boyfriend, John O’Keefe.

Karen Read's attorney asked for a mistrial with prejudice, accusing the prosecution of acting improperly, but the request was denied.

Karen Read pleaded not guilty to murder charges in the death of Boston police officer John O’Keefe and is facing a retrial after a jury was unable to reach a verdict last year.