NEW YORK - A 15-minute film of Marilyn Monroe engaging in oral sex with an unidentified man will be kept from public view by a New York businessman who has bought it for $1.5 million, the broker of the deal said on Monday.

Memorabilia collector Keya Morgan said he recently arranged the sale of the silent, black-and-white film from the son of a dead FBI informant who possessed it to a wealthy Manhattan businessman who wants to protect Monroe's privacy.

According to Keya Morgan, the man who bought the film promised not to make a joke of it or put it on the internet.

Monroe is clothed and the man's head remains out of the frame for the entire 15 minutes of the film, said Morgan, who watched it.

Monroe was rumored to have had an affair with U.S. President John F. Kennedy, and Morgan said then FBI Director J. Edgar Hoover, a Kennedy rival, went to great lengths to try to prove it was Kennedy in the film.

One of Monroe's ex-husbands, the late baseball great Joe DiMaggio, once tried to buy it from the collector for $25,000 but "he would not part with it," according to FBI files on Monroe that are available on the FBI Web site.