CHANHASSEN, Minn. (CBSNewYork) — Prescription painkillers were found in Prince’s possession when he died at his home in Chanhassen, Minnesota, CBS News reports.

A law enforcement source told CBS News the Carver County Sheriff’s Office has asked the federal Drug Enforcement Administration in help to determine where the medications came from and what prescriptions the legendary entertainer had obtained.

The source said the DEA is also being asked to determine where the drugs originated from. The source did not have any information on whether the medications played a role in Prince’s death.

CBS Minnesota reported Tuesday that Prince’s bodyguards carried him from his plane to receive medical care following an emergency landing near Moline, Illinois, on April 15.

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The report obtained by CBS Minnesota revealed that emergency crews responded to a call for emergency medical services involving an unresponsive passenger. Prince was returning from a show in Atlanta on April 14 when the plane made the emergency landing.

Prince reportedly was given a shot of Narcan, which is a life-saving opioid antidote, by emergency personnel. Prince was taken to a local hospital, while his publicist said at the time he was treated for flu-like symptoms.

Michael Padden, an attorney who once represented two of Prince’s half-siblings, told CBS Minnesota he was told by Duane and Lorna Nelson 10 years ago that Prince used to take Percocet and cocaine to enhance his performances and battle stage fright.

Padden claims his former clients recruited and paid others to get fake pain prescriptions for Prince.

Prince, 57, died last week at Paisley Park, his famous home and recording studio complex in suburban Minneapolis. His cause of death hasn’t been released. An autopsy was conducted Friday, but results aren’t expected to be released for weeks.

The value of his estate isn’t known. Prince made hundreds of millions of dollars for record companies, concert venues and others, and the outpouring of grief and nostalgia after his death prompted fans to buy 2.3 million of his songs in just three days.

Prince also owned a dozen properties in Minnesota, most of it undeveloped land and some houses for relatives, worth about $27 million, according to public records. He also sold more than 100 million albums, and concert industry magazine Pollstar reported that in the years Prince’s tours topped the charts — 10 years over four decades performing — they raked in $225 million in ticket sales.

But it’s not clear how much money Prince had when he died, given that he had to pay record labels and staff and cover other expenses.

On Wednesday, Judge Kevin Eide said Bremer Trust was in the best position to handle Prince’s estate. The judge noted that its affiliate, Bremer Bank, had worked with Prince and has knowledge of his personal and business finances.

The judge said Tyka Nelson, Prince’s only full sibling, and one of Prince’s half-brothers, Omarr Baker, were part of the telephone conference that prompted his decision Wednesday. The judge said no one objected to appointing a special administrator.

Under Minnesota law, if a person dies without a will — and with no surviving parents, children, or grandchildren — the next people in line to share in the estate are the surviving siblings, including half-siblings. Prince wasn’t married and had no known living children.

(TM and © Copyright 2016 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2016 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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