Investigation of a person of interest in Prince's death is reportedly underway.
After DEA agents obtained a search warrant for Prince’s estate on May 10, it was revealed that Dr. Michael T. Schulenberg arrived at Prince’s home on April 21, the day he died.
According to an affidavit, which was filed in connection with the search warrant, Prince visited with Schulenberg twice during the weeks leading up to the singer's death: once on April 7, and once on April 20, the former being the day Prince canceled a show in Atlanta, the New York Times reports.
Over the course of the two visits, Schulenberg reportedly ran tests and provided medication for an unknown ailment.
According to the affidavit, Schulenberg arrived at Prince’s home April 21 with the intention of delivering the tests results. Instead the doctor discovered the singer had died.
The results of Prince's autopsy have been completed but his cause of death has not been released, People Magazine notes. However, medical information shows he sought treatment from Schulenberg shortly before he died. Records also show Prince sought treatment for opioid addiction from a California doctor named Howard Kornfeld, the Times notes.
North Memorial Health Care employed Schulenberg. The doctor reportedly has a clean record, with no sign of malpractice. According to North Memorial spokeswoman Lesa Bader, the details of Prince’s treatments could not be released due to medical privacy laws.
Schulenberg himself is no longer employed by North Memorial Health Care. Bader said the reasons behind the doctor's absence is personal and cannot be disclosed.
Telephone messages left for Schulenberg have not been answered, according to the New York Times.
Kirk Johnson, a close friend of Prince's, told investigators the singer visited a local hospital sometime between 2014 and 2015. The reasons behind his visit are unknown, but Johnson said Prince received fluids.
Others close to Prince have said the singer suffered from various pains due to performances over the years. Investigators are figuring out whether painkiller abuse played a role in his death.
After canceling his April 7 show, Prince rescheduled the performance for the following week. However, after the show Prince complained of stomach pains, and his private jet made an emergency landing to in Moline Illinois.
According to Prince’s publicist the landing was due to the flue. But emergency records indicate the pilot radioed about an unresponsive passenger, and emergency medical personnel treated Prince with Narcan, which is typically used to reverse opioid overdoses.