The person being questioned in Pennsylvania in connection with the shooting death of United Healthcare CEO Brian Thompson has been identified as Luigi Mangione, according to six law enforcement officials with knowledge of the investigation. Mangione, 26, was arrested on a firearms charge by police in Altoona, Pennsylvania, but has not been charged in the Thompson slaying, officials said Monday. Investigators are looking into whether Mangione had recently traveled to Altoona by bus from Philadelphia, some 240 miles away, one senior law enforcement official said. A person of interest is being questioned in Pennsylvania in the Dec. 4 killing of United Healthcare CEO Brian Thompson. Anthony Behar / Sipa USA / APMangione was found in a McDonald's restaurant carrying multiple fake IDs, including one with the name “Marc Rosario," according to two senior law enforcement officials.

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Persons: Brian Thompson, Luigi Mangione, Thompson, Mangione, Anthony Behar, Marc Rosario, Jessica Tisch, “ Marc Rosario, ” Organizations: United Healthcare, New York Police, Police, New, New York Hilton Locations: Pennsylvania, Altoona , Pennsylvania, Altoona, Philadelphia, New York City, Manhattan, Jersey, ”, New York, Central Park