On April 20, 2016, Prince's representatives called Howard Kornfeld, a California specialist in addiction medicine and pain management, seeking medical help for the star. Kornfeld scheduled to meet with him on April 22, and he contacted a local physician who cleared his schedule for a physical exam on April 21. On April 21, at 9:43 am, the Carver County Sheriff's Office received a 911 call requesting an ambulance be sent to Prince's home at Paisley Park. The caller initially told the dispatcher that an unidentified person at the home was unconscious, then moments later said he was dead, and finally identified the person as Prince. The caller was Kornfeld's son, who had flown in with buprenorphine that morning to devise a treatment plan for opioid addiction. Emergency responders found Prince unresponsive in an elevator and performed CPR, but a paramedic said he had been dead for at least six hours, and they were unable to revive him. They pronounced him dead at 10:07 am, 19 minutes after their arrival. There were no signs of suicide or foul play. A press release from the Midwest Medical Examiner's Office in Anoka County on June 2 stated that the musician had died of an accidental overdose of fentanyl, at the age of 57.