The forensic scientist will continue her testimony under cross-examination when the trial resumes at 9 a.m. Thursday. Read, 45, is charged with second-degree murder in the death of O’Keefe, who was found outside the home of a fellow Boston police officer on Jan. 29, 2022.

The Karen Read trial is back in court on Wednesday, a day after proceedings were unexpectedly canceled just before testimony was scheduled to begin for the day because Read was sick. Cameras were shut off for about an hour as John O'Keefe's niece took the stand as the first witness of the day,