Documents unsealed Monday in the Prince death investigation pull back the curtain, ever so slightly, on law enforcement's response in the days after the musician's lifeless body was found inside a Paisley Park elevator.
But the search for answers into who is responsible for his overdose death continues as the anniversary of his April 21 death approaches.
State and federal authorities have spent the past year trying to identify the source of the fatal fentanyl dose, but no one has been arrested and it's unclear whether charges will ever be filed.
"We've gained a lot of progress over the last year," said Carver County chief deputy Jason Kamerud, "but there still is some more work to be done."
Kamerud gave no indication Monday of when the investigation might end, or its outcome.
The U.S. Drug Enforcement Administration turned over its findings to the U.S. attorney's office earlier this year without determining how Prince acquired the synthetic opioid that killed him, a source familiar with the case said. The U.S. attorney's office has declined to comment on the investigation.
The Carver County search warrant affidavits unsealed Monday showed that investigators searched Paisley Park within hours of Prince's death. Authorities found dozens of prescription medications that were not in typical prescription bottles, but rather were stored in various containers — such as vitamin bottles — scattered about the complex, including Prince's bedroom.
Authorities also discovered pharmaceutical bottles labeled in the name of Kirk Johnson, Prince's drummer, longtime friend and business associate, and a pamphlet on how to be weaned from drugs. But investigators found no prescriptions in Prince's name.