Prince, 57, was found in an elevator on his Minnesota estate on April 21.
The AP writes:
The official, who is close to the investigation, spoke on condition of anonymity because he was not authorized to speak to the media.
Investigators have been reviewing whether Prince died of an overdose and whether a doctor was prescribing him drugs in the weeks before his death.
This story is developing.
SOURCE: AP | PHOTO CREDIT: Getty, Twitter
Top Black Pop Culture Moments Of 2016 (So Far!)
1. Top Black Pop Culture Moments Of 2016: Steph Curry becomes the NBA's first unanimous Most Valuable Player and wins the award for the second straight seasonSource:Getty 1 of 7
2. Top Black Pop Culture Moments Of 2016: Tamar Braxton's sister shouts "Haay, Michelle! Girl, you look so good!" at the White House Black History Month event
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WATCH: POTUS: "We know it is black history month when we hear someone say 'heeey, Michelle! Girl. You Look so good!"https://t.co/3u36Y3iede— ABC News Politics (@ABCPolitics) February 19, 2016