According to a new report Khloe Kardashian's biological father is O.J. Simpson. Norman Padro, Simpson's manager, reportedly told InTouch magazine that Kris Jenner slept with the former pro athlete while still married to Robert Kardashian and he believes there is a strong possibility that Simpson is Kardashian's real father.  

"It's all going to come out sooner or later," he told the magazine. "Khloe could be O.J.'s kid."

According to Pardo, Simpson never denied claims that he was the father and whenever the rumors are brought up "he giggles."

Jenner has said before that she was friends with Simpson, who is currently serving time in a Nevada prison for kidnapping and armed robbery. Her ex-husband, Robert Kardashian, famously defended Simpson against charges that he killed his wife Nicole Brown Simpson, who Jenner was also friends with.

"They all took their vacations together," Padro said. "There was a lot of partying going on back then. Kris cheated on Robert - she was known for having a good time."

According to InTouch, Padro hinted that Simpson plans on telling the truth if he gets out of jail soon. Rumors surrounding Kardashian's biological father has plagued the family for years now. Last year, the National Enquirer made a similar claim and ran the story "O. J. Bombshell: 'I'm Khloe's REAL Dad!' Shocking truth about O.J. & Kardashian mom."

In the story the tabloid made claims that the 29-year-old star resembled Simpson's daughter with his late wife, Sydney Simpson. Jenner slammed the claims on Twitter writing: "Thanks for all your love and support today dolls! Wow some of the stories out there today are either fabricated, or SO 24 years ago!! LOVE U."

Two of Robert's ex-wives have also made similar claims. Jan Ashley, who married the lawyer after he divorced Jenner, told Star magazine that Robert confessed on his death bed that he was not Khloe's father.

"Khloe is not his kid - he told me that after we got married," she said at the time. "He just kind of looked at me and said [it] like it was a matter of fact. He said, 'Well, you know that Khloe's not really a Kardashian, don't you?' And I said... 'Ok,' and that was it."

Ellen Kardashian, who married Robert after he split from Jan also told the magazine that he too confessed to her. At one point on an episode of "Keeping Up With the Kardashians" Khloe questioned whether she was really a Kardashian or not but refused to take a DNA test to find out.