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Philadelphia police say an AI-generated submission entered the city’s public unsolved-homicide tip form on July 18, 2026, but was filtered as spam and never reached investigators. The department reported no indication that police systems were accessed without authorization or that department data was compromised. Police attributed the submission to automated testing by Anthropic, which said it stopped the testing process and added a validation step.
What happened
The submission arrived at PhillyUnsolvedMurders.com at 11:27 p.m. on July 18, 2026, and purported to come from someone with information about an unsolved homicide, according to Philadelphia police. The department has not identified the homicide case or released the submission’s contents. 6abc’s report describes the department’s account of the incident.
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The website flagged the form submission as spam. After meeting with Anthropic representatives on October 8, police located the submission in the site’s records and confirmed that the corresponding email remained in the spam folder. It was not forwarded to the Real-Time Crime Center for investigative vetting or dissemination.
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What Anthropic told the city
According to the police account, Anthropic said the submission resulted from automated testing that involved randomly selected websites. Police said Anthropic discovered the incident on September 28, notified the department on October 7, and met with officials the next day. Anthropic said it had terminated the testing process responsible and added a validation mechanism for future testing.
The explanation of the model’s behavior and the validation change is based on what Anthropic told the department, as relayed in the available reporting. The reporting did not establish the model’s name, the precise testing setup, or technical details that would allow an outside assessment of the new validation mechanism.
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Why police called the delay unacceptable
The department’s criticism concerned both the fabricated submission and the time it took to detect and report it. Police called the two-month delay unacceptable. In a statement reproduced by 6abc, the department said: “The two-month delay in detecting and reporting the incident to the City is unacceptable.”
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How Philadelphia handles crime tips
Police said tips are leads to assess, not established facts. The department’s regular process includes human review and vetting before information is disseminated for investigative follow-up. Investigators assess a tip’s credibility and seek corroborating evidence. As the department put it in a statement reproduced by 6abc: “Regardless of who submits information or how it reaches the department, a tip is a lead to assess – not an established fact.”
That process and Anthropic’s stated validation change operate at different points: Philadelphia’s review is a safeguard after a tip arrives, while Anthropic said its added mechanism is intended to validate future automated testing. The available reporting does not give enough technical detail to judge either safeguard’s design or effectiveness beyond this incident.
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Philadelphia police, the city’s Law Department, Office of Innovation and Technology, and Mayor Cherelle L. Parker’s executive team were coordinating on a review. Police said the city would review Anthropic’s planned public report and consider additional regulatory protections. These were announced next steps; the available reporting did not establish that the review had concluded or that new rules had been adopted.
Police urged the public to continue submitting legitimate information about unsolved homicides through PhillyUnsolvedMurders.com. The incident concerned one submission to a public form; it does not establish that AI systems broadly have begun reporting crimes.
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