A year on, few answers from probe into Prince's death

FILE - In this February 4, 2007, file photo, Prince performs during the halftime show at the Super Bowl XLI football game in Miami.

Newly unsealed documents offer even more insight into Prince's accidental overdose almost a year ago.

(Carlos Gonzalez/Star Tribune via AP, File).

FILE - In this April 21, 2016, file photo, a rainbow appears over Prince's Paisley Park estate near a memorial for the rock superstar in Chanhassen, Minn. Almost a year after Prince died from an accidental d.

The B12 detail was included in a detective's affidavit seeking one of the search warrants.

No prescriptions were found for fentanyl - a powerful drug that is 50 times stronger than heroin.

Detectives were "made aware by witnesses that were interviewed, that Prince recently had a history of going through withdrawals, which are believed to be the result of the abuse of prescription medication", the documents said. In some patients, the cycle leads to dependence and addiction.

Prince Rogers Nelson, 57, was found dead at his Paisley Park estate on April, 21, 2016.

About a week before his death, Prince's private jet made an emergency landing early April 15 in Moline, Illinois, on the way back from a performance in Atlanta. But it has been widely-reported first responders administered a shot of Narcan on the tarmac, an antidote used in suspected opioid overdoses.

A search of Prince's home yielded numerous pills in various containers.

"I don't know", Johnson said.

Some of the bottles were labeled Aleve and Bayer - common over-the-counter medications - but contained pills marked "Watson 853", the opioid painkiller acetaminophen-hydrocodone.

Federal prosecutors and the Drug Enforcement Administration are investigating how Prince obtained prescription medications and from whom. Johnson, a longtime drummer for Prince and estate manager at Paisley Park who was among those who discovered the musician's body April 21, 2016, is one of the key figures investigators want to interview in relation to his death.

In addition to the dozens of pills recovered, authorities also found a pamphlet for an addiction recovery center in California, the documents unsealed Monday show.

He says he wrote the prescription in Johnson's name to protect Prince's privacy.

Authorities also searched Johnson's cellphone records, to see who he was communicating with in the month before Prince died.

A message left with Schulenberg's attorney wasn't immediately returned. Schulenberg has an active medical license and is now practicing family medicine in Minnesota. Almost a year after Prince died from an accidental drug overdose in his suburban Minneapolis studio and estate, investigators still haven't interviewed a key associate nor asked a grand jury to investigate potential criminal charges, according to an official with knowledge of the investigation.

None of the medications found in Prince's home following his death previous year were prescribed to him, according to court documents unsealed Monday. Authorities asked that the search warrants be sealed "until April 17, 2017 or when a criminal case may be instituted, whichever occurs first". He traveled under the alias of Peter Bravestrong and did not own a cell phone because of fears of being hacked.

Lyrics for the song, "U Got the Look", were also found in that suitcase, written in Prince's handwriting.

KSTP learned during its initial reporting, Kornfeld, sent on behalf of his father, was carrying a small dose of the drug buprenorphine. He said a year isn't an unreasonable length of time for the investigation. Authorities haven't yet charged anyone in the case.

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