Minneapolis ? A toxicology report from Prince's autopsy, obtained Monday by The Associated Press, shows he had what multiple experts called an "exceedingly high" concentration of fentanyl in his body when he died. Experts who are not connected to the Prince investigation said the numbers leave no doubt that fentanyl killed him. "The amount in his blood is exceedingly high, even for somebody who is a chronic pain patient on fentanyl patches," said Dr.