Marilyn Monroe, who had a love affair with Bobby Kennedy, was taped having sex with John F. Kennedy shortly before she committed suicide, prompting rumors that she killed herself after finding out she was being recorded.

Fred Otash, a well-known private investigator who died in 1992, recorded Monroe and JFK having sex at a house in Malibu while he was spying for Howard Hughes, the Indian Express reports.

Otash also bugged several rooms in Marilyn Monroe's home on the day of her death, saying "I listened to Marilyn Monroe die," on one of his audio files that were discovered by his daughter in an old storage unit.

But on the same day of Marilyn Monroe's death, the actress reportedly got into an argument with John F. Kennedy and Bobby Kennedy over her sexual relationship with the brothers and complained about being "passed around like a piece of meat," the audio recordings revealed.

After several exchanges, Marilyn Monroe began screaming at the brothers, who then tried to silence her - possibly because they knew they were being overheard.

"She was really screaming and they were trying to quiet her down," Otash wrote in his notes, according to the Indian Express.

"She's in the bedroom and Bobby gets the pillow and he muffles her on the bed to keep the neighbors from hearing. She finally quieted down and then he was looking to get out of there."

But many speculate that the Kennedy brothers weren't trying to silence her because of the neighbors, but because they had an instinctual feeling they were being recorded - a move that could have ended both of their political careers.

While an official cause of death for Marilyn Monroe's suicide has not been discovered, the explanation that she killed herself because of the three-way sex scandal recording could have some basis in fact.