Testimony in the Karen Read trial was delayed to start the day Wednesday after Judge Beverly Cannone said that she needed to question jurors individually about an issue that was brought to her attention.

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.

Karen Read ‘s second trial in connection with the death of her boyfriend, Boston police officer John O’Keefe, was paused briefly Wednesday morning after the judge said an issue came up with the jury. It was not immediately clear what the issue was. Cannone and lawyers for both sides will question each juror individually.