Prince Died From Fetanyl Overdose (UPDATE)

CHICAGO (AP) — A Minnesota medical examiner says Prince died of an accidental fentanyl overdose.

The report from the Midwest Medical Examiner's Office was issued Thursday, more than a month after the music superstar was found dead at age 57 at his Paisley Park mansion.

The single-page report said Prince "self-administered fentanyl," referring is a synthetic opioid many times more potent than heroin.

The report was signed by Quinn Strobl, the office's chief medical examiner.

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11:45 a.m.

A person with knowledge of the medical examiner's plan says the results of Prince's autopsy are expected to be released Friday.

The person spoke on condition of anonymity because the person was not authorized to release the information. A spokeswoman for the medical examiner's office did not return messages seeking comment.

A law enforcement official who is close to the investigation told the AP on Thursday that tests show Prince died of an opioid overdose. The 57-year-old singer was found dead April 21 at his Minneapolis-area estate.

Investigators have been reviewing whether an overdose was to blame and whether he was prescribed drugs in the weeks before his death.

— Associated Press writers Amy Forliti in Minneapolis and Michael Tarm in Chicago

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11 a.m.

A law-enforcement official tells The Associated Press that tests show Prince died of an opioid overdose.

The 57-year-old singer was found dead April 21 at his Minneapolis-area estate.

The official, who is close to the investigation, spoke on condition of anonymity because he was not authorized to speak to the media.

Investigators have been reviewing whether an overdose was to blame and whether Prince was prescribed drugs in the weeks before his death.

— Associated Press Writer Michael Tarm