DNA test results show a Colorado prison inmate is not Prince’s son, a person who has seen a sealed document said Wednesday.

The finding means that Carlin Q. Williams is not entitled to inherit a fortune worth up to $300 million.

The person who spoke to The Associated Press was not authorized to release the finding and therefore requested anonymity.

TMZ, citing unnamed sources with direct knowledge of the case, first reported the DNA results.

Attorneys for Bremer Trust, the special administrator for the estate, filed the results Wednesday in Carver County District Court.

Prince died of an accidental drug overdose on April 21 and no will has emerged for him. He had no known surviving children although a few other people besides Williams have filed documents claiming Prince was or might have been their father.

Williams claimed that his mother had unprotected sex with Prince at a Kansas City, Missouri, hotel in 1976. Williams, a 39-year-old Kansas City man whose long criminal record includes drug and domestic violence charges, is serving nearly eight years in federal prison for unlawfully transporting a firearm in a stolen vehicle.