Days before the Dec. 9 arrest of Mangione at a Pennsylvania McDonald’s, San Francisco police informed the FBI they thought the as-yet-unidentified suspect in the Dec. 4 killing of UnitedHealthcare CEO Brian Thompson might be the man reported missing by Kathleen Mangione, according to sources with knowledge of the investigation.
“This was not a name that was called into us,” Jessica Tisch, New York City’s police commissioner, told NBC on Tuesday.
On Dec. 6, according to a source with knowledge of the investigation, San Francisco police reached out to the FBI to tell them the suspected killer looked like a man who had been reported missing in November. That FBI contact was first reported by the San Francisco Chronicle.
In a statement, the FBI verified that SFPD sent a tip regarding Mangione’s missing person report.
“Among multiple tips received by FBI New York from the public and law enforcement regarding the homicide in Midtown Manhattan on December 4, 2024, a tip was received from the San Francisco Police Department regarding the possible identity of the suspect,” the FBI said in a statement.
The FBI’s New York office then referred the lead, among others, to the NYPD.
“Extensive sharing of the photos by law enforcement led to the identification by a citizen and subsequent arrest by the Altoona Police Department,” the statement went on to say.
An SFPD spokesperson referred all inquiries about the case to the NYPD, which has not responded to a request for comment.
Mangione, 26, was arraigned Monday in Pennsylvania on gun charges. Several hours later, he was charged in Manhattan with murder, according to online court records.
New York police officials said Mangione was born and raised in Maryland, with ties to San Francisco, and lived until recently in Honolulu.