w the law on reasonable doubt, forcing Sullivan to question each juror individually under oath. The judge also re-read the panelists his instructions on the law on reasonable doubt.

5 Lindsay Clancy, 32, allegedly strangled her daughter Cora, 5, and son Dawson, 3, to death and tried to suffocate her baby son inside their Duxbury, Massachusetts, home before jumping from a second-floor window on Tuesday. Facebook / Lindsay Marie Clancy

5 Lindsay Clancy seated in court during her trial. via REUTERS

The jury - composed of nine women and three men - deliberated for roughly 38 hours over the course of seven days and notified the judge they were deadlocked for the first time on Tuesday, then again on Wednesday and for the last time on Friday.

Clancy's lawyer, Kevin Reddington, asked the jury to find the 36-year-old former nurse not criminally responsible on the grounds she was in the throes of severe postpartum psychosis and heard a voice commanding her to strangle her three kids, Cora, 5, Dawson, 3, and Callan, 8 months, on Jan. 24, 2023.

But prosecutors claimed she carefully planned the killings and made up hearing the voice and experiencing a psychotic break to avoid criminal culpability.

The case has gripped the country, shining a light on postpartum and mental health issues and how the health care system cares for new mothers.

Reddington argued at trial that Clancy received negligent care from a psychiatrist and other providers who allegedly failed to properly diagnose her and who overmedicated her with 13 powerful psychiatric medications in the four months leading up to the slayings.