Massachusetts woman does not deny fatally strangling her three children but says postpartum psychosis led her to it

The judge has told the jury in the Lindsay Clancy trial to keep deliberating after it said it was unable to come to a unanimous decision in the controversial case of the mother who killed her three children.

Clancy, a former labor and delivery nurse in Massachusetts, does not deny strangling her children but says postpartum psychosis led to her actions. Prosecutors argue she knew what she was doing. Clancy, 36, has pleaded not guilty by reason of lack of criminal responsibility.