Dr. Michael Schulenberg said he prescribed Prince - whose April 21, 2016 death was ruled as an opioid overdose - Oxycodone under his bodyguard Kirk Johnson's name in order to preserve his privacy, according to multiple search warrants executed previous year.
A medical expert who predominantly treated Prince, named Doctor Michael Schulenberg, has reportedly admitted to prescribing the singer Oxycodone shortly before he reportedly overdosed on his private jet, which came nearly one week prior to his death.
The document is one of several affidavits and search warrants unsealed in Carver County District Court as the yearlong investigation into Prince's death continues.
Between April 21 and September 19, 2016, Carver County authorities conducted investigations into Prince's death with a total of 11 search warrants.
Johnson told investigators he didn't know Prince was addicted, according to the warrants, which note that Johnson had known Prince since the 1980s. That night, a Prince representative in California contacts Dr. Howard Kornfeld, a California addiction specialist, and asks him to intervene and help get the megastar off prescription painkillers.
The B12 detail was included in a detective's affidavit seeking one of the search warrants.
Information in the warrants also revealed that investigators found a suitcase containing several prescription bottles in the name of Johnson, who told investigators a year ago that the singer had been struggling with opiate use.
Messages left with attorneys for Schulenberg and Johnson weren't immediately returned Monday.
According to the documents, Johnson went to Walgreen's and picked up Prince's prescription medication.
Almost everyone who was close to Prince - and who has been willing to speak to the media - said they never saw him taking any drugs.
Martinez of the Minnesota medical board said it's "quite infrequent" for a doctor to write out a prescription for someone in another person's name. His official cause of death was given past year as an accidental, self-administered overdose of the painkiller fentanyl. And, experts say, prosecutors and investigators don't want to lose a high-profile case such as Prince's likely increasing their caution.
Prince, whose full name was Prince Rogers Nelson, died April 21, 2016 at the age of 57.
The documents said Prince did not have any prescriptions, including for fentanyl. The suitcase contained prescription pill bottles in the name of Kirk Johnson, and a closer examination of those pill bottles revealed that not all the pills inside the containers were the pills listed on the prescription. Kornfeld sent his son, Andrew, to Minnesota that night, and the younger Kornfeld was among those who found Prince's body. If questions remain six months from now, however, he said he'd question what law enforcement is doing.
Investigators have said little about the case over the previous year, other than it is active. The Kornfelds' attorney, William Mauzy, has said Andrew had meant to give the medication to a doctor.