With the one-year anniversary of Prince's passing swiftly approaching, new information is still surfacing regarding the details surrounding and leading up to his untimely death.

As the investigation remains ongoing, several documents have since been unsealed, with several affidavits and search warrants revealing previously unreleased information. As reported, the unsealed documents reveal the fact that the doctor who treated Prince in the days prior to his death prescribed him oxycodone, but did so under the name of the iconic musician's friend, reportedly in order to protect his privacy.

As previously reported, the autopsy report found that the 57-year-old died from an accidental overdose of fentanyl, a drug roughly 50 times more powerful than heroin.

Additionally, the new reports show that police have been looking at the cellphone records of Prince's associates (the singer did not own a cellphone of his own at the time of his passing), as well as email accounts and the estate of Paisley Park, all in an effort to discover where and how the musician acquired the drug.

The reports also share that the prescription to oxycodone was written the same day that the musician's plane made an emergency landing, and was written in the name of Kirk Johnson. Johnson is Prince's longtime friend, and also has had his cellphone records searched during the investigative process.

At the time of this report, exactly how the fatal dose of fentanyl came into Prince's possession still remains unknown and the investigation continues.