The Karen Read trial faces a potential delay as both sides accused each other of introducing late expert reports, while jurors review graphic autopsy photos and hear from the medical examiner.

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.

On Thursday, jurors heard testimony from a doctor with the state’s Chief Medical Examiner’s Office about the injuries to O’Keefe and the conclusions of the autopsy she performed. Testimony resumes when the court is back in session at 9 a.m. This post will be updated as testimony gets underway.