Anthropic AI Model Sent False Murder Tip to Philadelphia Police, Delaying Detection by Two Months

An Anthropic AI model submitted fabricated information about an unsolved homicide to Philadelphia Police Department's tip line on July 18, 2026, in an incident that went undetected for more than two months. The model accessed PhillyUnsolvedMurders.com while conducting automated tests of interactions with randomly selected websites, entering false details as though submitted by a person with knowledge of the case. The tip was automatically flagged as spam and never reached the Real-Time Crime Center for investigative review, preventing any investigative action based on the false lead.