Pop star Prince did not leave a will, his sister has revealed in court documents.
The papers, filed in state court in Minnesota, show the musician's sister Tyka Nelson has petitioned for a special administrator to oversee the star's estate.
The music legend was found dead in an elevator at his Paisley Park Studios compound in a suburb of the American city of Minnesota last Thursday at the age of 57.
The size of Prince's fortune is unclear but includes $US27m in property.
Ms Nelson is Prince's only surviving full sibling and she stated in the papers that immediate action was necessary to manage her brother's business interests.
Prince has dominated UK music charts this week, as mourning fans rush to buy his music, while the Hollywood Reporter claimed over 3 million of his songs and albums had been bought in the US since his death.
A private memorial service was held for the rock star on Saturday, attended by about 20 of his closest friends and family.
Following the service, drummer and frequent Prince collaborator Sheila E confirmed there were plans to turn Paisley Park into a museum, akin to Elvis Presley's Graceland.
Since his death, thousands of fans have flocked to Paisley Park, the First Avenue nightclub, and other sites made famous by Prince, while tributes have come from Lady Gaga, Bruce Springsteen, Stevie Wonder, Justin Timberlake and President Obama, amongst others.