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From opening statements to closing arguments, these are the emotional highlights of the trial of Lindsay Clancy, who is accused of killing her three young children. NBC News' Steven Romo reports.

17-year-old Arjun Aravind has been arrested, and officials allege he used ChatGPT to write stories related to the killing of family before his mother and brother were found dead in their Massachusetts home. NBC News' Erin McLaughlin reports.