Minnesota authorities were spotted searching Prince’s estate, Paisley Park, Tuesday amid reports that the late singer possibly overdosed on prescription medicine.

A sheriff’s vehicle along with more than ten unmarked police cars were seen going into the property. Carver County Sheriff Chief Deputy Jason Kamerud told the Associated Press reporters that they were simply “being thorough” before he refused to answer any questions about the warrant they received. At one point a couple of media outlets got access to it. But then it was sealed.

Still, it is said to have authorities searching for “any and all medical records, documents, reports, charts, photographs, prescriptions, doctor notes and medical images for Prince Rogers Nelson.”

As for speculation that Prince overdosed on prescription drugs before he passed away on April 21, Dr. Michael Todd Schulenberg went to see him just the day before he died. He also treated him on April 7. He prescribed medication for Prince; which could be why investigators hope to find out if an overdose was related to Prince’s passing. Schulenberg told investigators that he was actually taking test results to Prince on April 20 only to find the chaotic scene following the singer’s passing. Interestingly enough, Schulenberg is no longer a doctor for the North Memorial Medical Center. It has not been reported why.

Dr. Howard Kornfeld, who works as an addiction specialist, also said that representatives for Prince reached out to him on April 20.

Tags: Prince death Prince Dies Prince 2016