Jurors in the murder trial of Lindsay Clancy notified the judge on Tuesday that they are unable to reach a unanimous decision on whether to convict the Massachusetts woman for killing her three young children at her home in 2023, a tragedy her attorney contends occurred while she was suffering from postpartum psychosis.

Judge William Sullivan in Plymouth, Massachusetts, after receiving the jury’s note, instructed jurors to continue their deliberations, which are now into their fourth day in a trial that began nearly six weeks ago.

“After many hours of deliberation, we are unable to come to a unanimous decision,” the jury said in the note, according to Sullivan.

The judge emphasized that it had been a long trial with over 80 witnesses and more than 300 exhibits.

“Because of that, I’m going to ask you to go back out, keeping in mind all of the instructions that I gave you, to go out and to continue your deliberations at this time,” he said.

The televised trial has revived long-simmering debates about how postpartum mental health in women is treated in the U.S., and how the country’s legal system addresses cases when mothers kill their children.

No one disputed that Clancy, 36, strangled her three children to death in January 2023 with exercise bands in the basement of her home in the Boston suburb of Duxbury. She then cut herself with a knife and jumped from a second-story window in a failed attempt to end ​her own life that left her paralyzed.

But her attorney, Kevin Reddington, throughout the trial sought to convince jurors that she should be found not guilty by reason of insanity, arguing that she was a loving mother who had been in the midst of a psychotic episode when she killed Cora, 5; ​Dawson, 3; and 8-month-old Callan on January 24, 2023.

(Reporting by Nate Raymond in Boston; Editing by David Bario)