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.

Former Canton patrol officer Kelly Dever was called to the stand in the retrial of Karen Read, the woman accused of hitting her former boyfriend and police officer John O'Keefe with her vehicle and causing him to hit his head and die in the snow.

A medical doctor testified in the Karen Read murder trial that she believes wounds to John O’Keefe’s arm were “inflicted by a dog.”