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.

Prosecutors called Massachusetts State Police Sgt. Yuri Bukhenik to testify Thursday in the Karen Read murder trial and used his testimony to guide jurors through several pieces of physical and video evidence.

John O'Keefe's injuries immediately pointed to a vehicle strike, a Massachusetts State Police sergeant testified Thursday.

After three former Memphis police officers were acquitted in the beating death of Tyre Nichols, community and civil rights leaders are expressing outrage over another disappointment in the long push f