(CNN) — Authorities were at the Minnesota home of Prince on Tuesday as part of an ongoing investigation into the music legend’s death, the Carver County Sheriff’s office tweeted.
CNN affiliate WCCO reported more than a dozen vehicles were at the house where Prince died April 21.
“Detectives are revisiting the scene at Paisley Park as a component of a complete investigation. No other information is available,” the sheriff’s office tweeted.
The U.S. Attorney’s Office and the Drug Enforcement Agency announced last week they were joining forces with local investigators, led by the sheriff’s office in Carver County, to investigate Prince’s death.
The county includes the Minneapolis suburb of Chanhassen, where Prince’s Paisley Park complex is located.
Officials have yet to publicly comment on what killed Prince. Results of an April 22 autopsy are still pending.
A search warrant reveals that a Minnesota doctor saw Prince twice in the month before his death, including the day before he died, and prescribed him medication.
The warrant was filed Thursday in Hennepin County. It was obtained by KSTP-TV and the Los Angeles Times. It says Dr. Michael Todd Schulenberg treated Prince on April 7 and April 20, and that he prescribed “medications and prescriptions” for the musician.
Investigators interviewed Schulenberg and searched a suburban hospital where he worked.
A spokeswoman for North Memorial Medical Center says Schulenberg was a primary care physician at its Minnetonka clinic but he no longer works for the health care system. A message left Tuesday at the physician’s home wasn’t immediately returned.
Prince died April 21 at his Minnesota home. Autopsy results are pending.