Inmate Carlin Q. Williams, 39, filed papers in Carver County District Court in Chaska, Minnesota, in May alleging that the late "Purple Rain" singer is his father.
A person who has seen the sealed paternity documents and spoke to the AP was not authorized to release the information. The person requested to remain anonymous after leaking the information.
If the reports about the recent DNA findings are true, Williams will not inherit any part of the legendary pop singer’s reported $300 million fortune.
In an affidavit filed in May, Williams’ mother, Marsha Henson, claims she met the musician in the lobby of a Kansas City hotel in July 1976 and had unprotected sex with Prince later that night.
She said she did not have sex with anyone six weeks prior to Prince nor did she have sex until she gave birth in April 1977.
At the time of the alleged incident, Prince would have been 18 years old — two years shy of releasing his landmark debut, For You. The judge in the case ordered a DNA test to prove her claims.
Williams is currently serving 92 months in a Colorado federal prison for possession of a firearm by a felon.
Henson told the AP that she believed the DNA evidence was fake.
"I don't believe that. I think they're positive," she told the AP.
Prince, who has one biological sister and five half-siblings, is estimated to be worth $300 million. The business-savvy musician did not leave a will prior to his passing, leaving his fortune to his siblings.
Williams, a Kansas City native, is also a musician and goes under the name “Prince Dracula.”
On Williams’ music profile on Reverbnation, he wrote: “I Am Prince (rodger nelson) aka Prince The Singer's Son.”
In the profile, Williams spelled Prince’s full name wrong, which is Prince Rogers Nelson.
The judge overseeing the estate case has given creditors four months to file any claims they may be related to the "1999" singer.
Prince was pronounced dead April 21, after he was discovered in an elevator inside his Paisley Park compound outside Minneapolis. The 57-year-old’s cause of death was ruled a drug overdose.