Opioid painkillers were found in several places in Paisley Park in the days following Prince's death previous year, court documents released Monday showed.
The documents showed that some of the prescriptions were made out in the name of Kirk Johnson, Prince's bodyguard, to safeguard "Prince's privacy".
According to search warrants applied for by Detective Angela Nucci and unsealed on Monday, Paisley Park was thoroughly examined by law enforcement officers.
According to a search warrant, Schulenberg told authorities he saw Prince on April 7 and April 20, and prescribed medications for Prince to be picked up at a Walgreen's pharmacy.
"Many of those areas where the pills were located would be places Prince would frequent, such as his bedroom and wardrobe/laundry room", one document said. The day before Prince died, Paisley Park staffers contacted the California addiction specialist as they were trying to get Prince help.
Prince's private plane made an emergency landing during a flight from Atlanta to Minneapolis the week before his death, when the musician "passed out" en route.
An online search reveals a multitude of sources that say that capsule is a mixture of acetaminophen and hydrocodone, a prescription classified as a narcotic.
Information in the warrants also revealed that investigators found a suitcase containing several prescription bottles in the name of Johnson, who told investigators past year that the singer had been struggling with opiate use.
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A message left with Dr Schulenberg's lawyer was not returned, according to AP.
They don't reveal answers, but do shed light on Prince's struggle with addiction to prescription opioids in the days before he died.
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. However, the medications were not prescribed to the musician under his own name. "Investigators also noted that the 'Peter Bravestrong" suitcase contained handwritten lyrics for Prince's song "U Got the Look".
Almost a year after Prince died, search warrants from the singer's Paisley Park compound have been unsealed, providing some insight into his unexpected death at the age of 57.
Hill said that she communicated with Prince over landline phone or an email under the name of the star's former manager. Kornfeld sent his son, Andrew, to Minnesota that night, and the younger Kornfeld was among those who found Prince's body.
It's been almost a year since Prince died from an accidental drug overdose at his suburban Minneapolis estate, yet investigators still haven't interviewed a key associate or asked a grand jury to consider whether criminal charges are warranted, according to an official with knowledge of the investigation.
He says authorities could charge Dr. Michael Todd Schulenberg and Prince's friend, Kirk Johnson, with a low-level felony that wouldn't result in prison time. Andrew Kornfeld was the person who called 911, Mauzy said.
Patients who take prescription opioids eventually build up a tolerance and need to take stronger doses to get the same effect.