Judge William Sullivan declared a mistrial after the jury deliberated for seven days without reaching a unanimous decision. The judge said the court was considering holding a new trial later in the fall and scheduled a status conference for the end of the month to discuss the next steps.

Clancy’s attorney, Kevin Reddington, said he wanted the retrial to begin as soon as possible. Judge Sullivan said he was also in favour of moving quickly but would make a final decision after reviewing the court’s schedule.

Prosecutors have not yet decided whether to seek an immediate retrial. Plymouth County District Attorney Timothy Cruz said the decision would be addressed at a future court hearing.

Clancy is currently being held without bail at a hospital in Massachusetts while facing three counts of first-degree murder. Under Massachusetts law, first-degree murder charges must be decided by a jury trial.

Prosecutors could also consider offering Clancy a plea agreement involving lesser charges. Boston defence attorney Elise Hershoun said the district attorney will ultimately decide whether to retry Clancy on the first-degree murder charges or pursue an agreement on reduced charges.

The jury’s division during the trial could make a retrial more complicated for prosecutors. Former Massachusetts judge Carol Erskine said reports that 11 jurors did not agree with the prosecution’s argument that the killings were premeditated could make it more difficult to secure 12 unanimous jurors in a second trial.

The case could also be moved to another location. Either the defence or prosecution could argue that extensive media coverage in Plymouth County could make it difficult to ensure a fair trial.

The case drew additional attention after a Clancy supporter was arrested for allegedly recording jurors in a courthouse parking lot and attempting to intimidate them. The incident could raise further concerns about protecting jurors from pressure or threats during any future trial.

If a retrial takes place, both sides are also expected to revisit which evidence and expert testimony should be allowed in court.

Clancy’s defence team has previously challenged prosecution experts, including Dr. A. V. Mack, who met with Clancy and testified about her mental state and condition at the time of the alleged killings.

The next stage of the case will depend on the district attorney’s decision on whether to seek a new trial, pursue reduced charges or negotiate a plea agreement.