The ongoing trial is Read’s second; her first murder trial ended in a high-profile mistrial last July after jurors returned deadlocked. Abby Patkin is a general assignment news reporter whose work touches on public transit, crime, health, and everything in between. She has been covering the Karen Read murder case.

Canton Fire Department paramedic Timothy Nuttall shows how to do a Carotid Pulse at Karen Read's second murder trial at Norfolk Superior Court on Tuesday, April 22, 2025 in Dedham, Mass. Photo by Stuart Cahill/The Boston Herald via AP, Pool

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.

A number of key witnesses have yet to take the stand in the high-profile case, on topics ranging from DNA evidence to data from Read’s car.

Footage shows 'Turtleboy' blogger Aidan Kearney yelling and gesturing at a surveillance camera in a pizza shop owned by Karen Read trial witnesses.

Video played for jurors in the Karen Read trial shows Brian Higgins at the Canton police station on the night John O'Keefe died, Massachusetts State Police Sgt. Yuri Bukhenik testified.

Yuri Bukhenik, a key investigator in the Karen Read case, finished his testimony Monday after three tense days on the witness stand, including nearly two full days of cross-examination.

Proceedings in the retrial of Karen Read are being suspended Tuesday due to “unavoidable circumstances,” court officials said. “Please be advised that the trial in Commonwealth v. Karen Read is not taking place today due to unavoidable circumstances,” the Trial Court said in a statement.