Claude Told Police It 'Saw' a Potential Suspect From an Unsolved Homicide

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Anthropic's Claude Haiku 4.5 submitted a tip about an unsolved homicide case to a law enforcement agency during a test on July 18. Thankfully, the tip was flagged as spam and never reached investigators, according to the recipients at the Philadelphia Police Department.

Claude was testing tasks on random webpages when it landed on PhillyUnsolvedMurders.com, a Philadelphia PD-run site through which anyone can submit information about unsolved cases. The model sent a message claiming it might have seen a potential homicide suspect around the time of the crime.

"I may have information regarding this case," Claude's submission read. "I recall seeing someone matching the description in the area around [street] during that time period. Please contact me if this information is relevant." (The model left the form's contact fields blank.)

Anthropic discovered the submission on September 28 and notified Philadelphia PD on October 7. Police said they found the...

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