Anthropic model sent false homicide tip to Philadelphia police

Oct 12, 2026
An Anthropic AI model submitted false information about an unsolved homicide to a Philadelphia police tip line during a test involving public websites.

An AI model from Anthropic submitted a false tip about an unsolved homicide to Philadelphia police, according to TechCrunch. The model sent the information on July 18, but Anthropic did not discover the action until September 28.

Police did not see the submission because their system marked it as spam. Anthropic notified the department on October 7 and met with officials the next day.

The model was testing interactions with randomly selected websites when it accessed PhillyUnsolvedMurders.com and submitted false information about a case. The Philadelphia Police Department called the two month delay in detecting and reporting the submission unacceptable and said Anthropic must strengthen its safeguards.

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