A man falsely claiming to be an FBI agent showed up to a federal jail in New York on Wednesday night and told officers he had a court order to release Luigi Mangione, authorities said. Mark Anderson, 36, of Mankato, Minnesota, was arrested and charged with impersonating a Federal Bureau of Investigation agent in a foiled bid to free Mangione from the Metropolitan Detention Centre, the notorious Brooklyn lock-up where he is held while awaiting state and federal murder trials in the killing of...