A trial is underway in Massachusetts for a mother accused of killing her three children. The woman's former husband testified as a witness for the prosecution. He is expected to continue testifying when the court resumes.

The defendant has pleaded not guilty to murder charges, citing mental illness as a factor. Her attorney claims she was suffering from extreme mental health issues at the time of the incident. Further details about the case and trial proceedings are available from KVIA ABC-7's source, which has been following the story and providing updates as more information becomes available.