Acton teen held without bail in murders of mother, brother linked to ChatGPT

By Anna Meiler is an anchor and reporter for WBZ-TV News. Read Full Bio Aaron Parseghian is an award-winning reporter and multimedia journalist who joined WBZ-TV in August 2025. Read Full Bio Updated on: August 13, 2026 / 10:47 AM EDT / CBS Boston Add CBS News on Google An Acton, Massachusetts teenager charged with killing his mother and brother in a case linked to ChatGPT is being held without bail.Arjun Aravind, 17, pleaded not guilty to murder and several other charges at his arraignment Thursday morning in Concord District Court. Arjun Aravind at his arraignment in Concord District Court on Aug. 13, 2026 CBS Boston He's accused of killing his 45-year-old mother Sudha Venkatesan and his 14-year-old brother, Siddharth Aravind, in their home on Martha Lane Tuesday afternoon. Prosecutor Susan Wiseman said Thursday the official cause of death has not been determined yet, but she said it was "blunt force trauma" and that it was a "visible and violent struggle."Aravind was found several hours after the murders at 3:40 a.m. in his mother's car in a parking lot in Wayland and was arrested.There's no word yet on a motive. At a news conference announcing Aravind's arrest Wednesday, Middlesex District Attorney Marian Ryan said the teen "had been recently demonstrating some concerning behavior, including using the internet and ChatGPT to make searches for theoretical ideas or fantasy stories regarding the killing of his family." Aravind is due back in court for a probable cause hearing on Sept. 11. In: Massachusetts Acton ChatGPT