The official cause of death was a self-administered overdose of the painkiller fentanyl, but no prescriptions were found for the powerful drug which is 50 times stronger than heroin.
The statement adds, "County Attorney Metz will articulate the legal status of these matters but County Attorney Metz will not take media questions following the announcement".
The Carver County Attorney's Office announces whether it will file criminal charges against anyone in the death of music legend Prince.
It was Andrew Kornfeld who discovered Prince's unresponsive body the morning of April 21, 2016, when he arrived at Paisley Park for a meeting on how to proceed with his treatment. The concentration of fentanyl in Prince's blood alone was 67.8 micrograms per liter, which outside experts called "exceedingly high". The report explains that fatalities have been documented in people with blood levels ranging from three to 58 micrograms per liter. The unsealed documents also showed that authorities searched his home, cellphone records of associates and his email accounts to try to determine how he got the drug.
None of the medications found in Prince's home were prescribed to him, according to court documents unsealed in April 2017.
Six days before Prince died, he also fell ill and passed out on his private plane while returning to Minneapolis from performing in Atlanta, where he had told his audiences he had been feeling "under the weather".
In memoriam: Musicians we lost in 2016But federal prosecutors and the U.S. Drug Enforcement Administration alleged Schulenberg, a family physician who saw Prince at least twice before he died, violated the Controlled Substances Act when he wrote a prescription in the name of someone else on April 14, 2016.
Prince did not have any prescriptions for fentanyl.