The results appear to be in ... iconic singer Prince died of an opioid overdose, the Minneapolis Star Tribune reported Thursday. The publication is has cited a source familiar with the investigation into the late singer's death on April 21.

According to the National Institute on Drug Abuse, "Opioids are medications that relieve pain. They reduce the intensity of pain signals reaching the brain and affect those brain areas controlling emotion, which diminishes the effects of a painful stimulus. Medications that fall within this class include Medications that fall within this class include hydrocodone (e.g., Vicodin), oxycodone (e.g., OxyContin, Percocet), morphine (e.g., Kadian, Avinza), codeine, and related drugs."

Prince was pronounced dead after being found unresponsive in an elevator at his Paisley Park home in Chanhassen, Minnesota at the age of 57.

Authorities said that the paramedics on the scene performed CPR but could not revive the "Purple Rain" singer. An autopsy was conducted the day after his death, however the official results have yet to be released.

However much speculation has occurred surrounding the cause of his death, especially after numerous reports have surfaced that the Purple One had an addiction to prescription drugs.

While many were shocked to hear that the late great singer had a pill addiction, Prince's half-siblings came forward to say that Prince was addicted to Percocet decades before his death, one half-sibling noted that the singer used the drug to deal with the rigors of performing, but not for recreational use.

Sadly, it seems as though this addiction to pain killers ultimately led to his death ...