Police Conduct and Evidence Handling

A San Francisco police sergeant has publicly denied being the investigator who heard an allegedly incriminating remark by the mother of accused UnitedHealthcare CEO assassin Luigi Mangione, contradicting a 2024 statement by NYPD’s chief of detectives and bolstering the defense’s claim that the quote was fabricated. Sgt. Michael Horan, who took a November 18, 2024 missing‑person report on Mangione before Brian Thompson’s Manhattan shooting, told Rolling Stone he never spoke with Mangione’s mother after her son became a suspect and that any such comment may have come from an FBI interview, as Mangione’s lawyers say discovery files contain no record of the quote NYPD publicly attributed to her.