New York law enforcement officials also said Mangione's fingerprints and DNA matched a water bottle and protein bar wrapper discarded near the crime scene.
The unidentified man was last seen alive in a hardware store. Police believe he is from overseas and they hope a relatively new DNA technique can help solve the mystery.
Police Say Suspect’s Notebook Described Motive for C.E.O. Killing The man who has been charged with killing Brian Thompson was found with a notebook that detailed plans for the shooting ...