New York - The FBI released the file it maintained on Playboy founder and editor-in-chief Hugh Hefner two years after the legendary publisher passed away - and it's revealing.
The bureau interviewed Hefner in the late 1950s and 1960s over what is described as "obscene material."
The file also contains a memo written to then-Director J Edgar Hoover in which the agent in charge pitches putting Hefner and his photographer Edward Oppman under surveillance to see if either was transporting "pornographic images" across state lines.
However, the investigation didn't turn up any crimes.
"Persons interviewed advised that Hefner too clever to violate Federal or local laws," the bureau's investigation concluded.