On February 19, 2025, 32-year-old Margaux Whittemore was killed in Readfield, Maine, while visiting her husband's parents. Maine State Police identified her husband, Samuel Whittemore, as the suspect and confirmed that his mother, Dorothy Whittemore, had also been seriously injured but survived. The medical examiner ruled Margaux's death a homicide. The original incident and subsequent criminal proceedings are documented by law enforcement and contemporary courtroom reporting. This record counts one deceased person, not two.
Criminal investigation and court proceedings
Police reported responding to the home on Giles Road at approximately 10:02 a.m. on February 19. Samuel Whittemore was detained nearby. A Kennebec County grand jury indicted him on March 19 on murder and additional assault-related counts. During subsequent forensic evaluation and court proceedings, experts considered his ability to understand the wrongfulness of the acts. On October 16, 2025, Superior Court Justice Michaela Murphy found him not criminally responsible by reason of mental illness and ordered him committed for state psychiatric treatment rather than sentencing him to prison. This is an actual judicial disposition of the homicide, not an acquittal based on absence of evidence that the attack occurred.
Reported conversational AI involvement
In testimony summarized by the Kennebec Journal, state forensic psychologist Melissa Jankowski said Samuel Whittemore had told her that he used ChatGPT for as much as 14 hours per day before the killing, interacted with the program as a companion, and received affirming conversational responses. The psychologist discussed work stress and preoccupation with AI among circumstances preceding a manic episode involving psychosis. Additional testimony described beliefs about robots and machines. Those observations are important evidence that a named AI system was reportedly being used during the period before the fatal event. They are not evidence that the system issued instructions to kill or that investigators authenticated any particular AI message as a precipitating cause.
Medical factors and the limits of attribution
Medical witnesses attributed Whittemore's inability to appreciate his actions to severe mental illness during a manic episode. Court reporting gives this clinical assessment a much stronger evidentiary basis than any AI-specific mechanism. No full chatbot transcript, model version, provider-side interaction log or judicial finding attributing the attack to ChatGPT is available in the referenced reporting. AIDeaths accordingly documents the connection as reported and causally disputed, not a confirmed case of AI-directed violence.
Family, safety and public significance
Margaux's family contested the outcome and urged a custodial criminal punishment; the court's decision reflects Maine's legal standard for criminal responsibility. The incident raises research questions about how highly engaging conversational systems may interact with existing vulnerabilities and whether designers can recognize potential crisis situations, but neither the prevalence of such events nor the efficacy of any proposed safeguards can be estimated from one case. The reported length of ChatGPT use is based on testimony describing Whittemore's own account, not an independently verified platform usage statistic.
Location and verification
Readfield, Kennebec County, Maine is the location of the fatal assault. The map marker uses approximate municipal coordinates; it does not identify the family home. Police reported the date as February 19, resolving conflicting retellings that refer to February 18. The original Maine State Police announcement, direct courtroom coverage in the Kennebec Journal and Bangor Daily News reporting provide different levels of evidence and are attributed accordingly.