A judge declared a mistrial Friday in the case of Lindsay Clancy, a Massachusetts woman who admitted to killing her three young children, after the jury failed to reach a unanimous verdict.

Clancy, 36, had pleaded not guilty by reason of insanity, claiming she suffered from postpartum psychosis and was not criminally responsible for the deaths of her children, Cora, five, Dawson, three, and eight-month-old Callan. The jury deliberated for seven days before informing the court they were deadlocked.

"At this point, I'm going to declare that the jury is deadlocked, and I'm going to declare a mistrial," Judge William Sullivan said.

Eleven of the twelve jurors reportedly favored finding Clancy not guilty by reason of insanity, but they were opposed by a single holdout. The mistrial leaves the case unresolved and allows prosecutors to try Clancy again.

Prosecutors must now decide whether to pursue a new trial. "I'll be making that decision shortly," Plymouth County District Attorney Tim Cruz told reporters.

Kevin Reddington, Clancy's lawyer, expressed disappointment at the outcome, saying his client and the other jurors were let down by the man who declined to vote for acquittal. "They were robbed by one man for whatever his agenda was," Reddington said. "I hope that guy can sleep well at night."

Clancy will remain at a psychiatric institution pending a possible new trial.

The case has drawn widespread attention, with dozens of women dressed in pink appearing in court to support Clancy. Her former mother-in-law, Susan Clancy, described her as a "very nurturing, very loving mother" who was "begging for help." Patrick Clancy, her ex-husband, has said he has forgiven her and believes her actions were the result of mental illness.

The prosecution argued that Clancy acted deliberately, planning the murders and understanding the consequences of her actions. They noted that she had never disclosed hearing voices to her mental health providers before the killings. Defense experts, including forensic psychiatrist Dr. Phillip Resnick, said Clancy was "clearly psychotic" and not in control of her actions. Reddington also said Clancy had received "lousy medical care" from the doctors she consulted.

Clancy's trial, which featured more than 80 witnesses and days of emotional testimony, highlighted national debate over maternal mental health. President Donald Trump called the case "a horrible tragedy," adding, "I assume there's going to be another trial."

Clancy was paralyzed from the waist down after jumping from a second-story window following the killings in January 2023.