Police found no signs of suicide or obvious trauma in the death of US music superstar Prince, but it could take weeks before autopsy results reveal how the groundbreaking performer died, authorities said on Friday.
The intensely private musician, whose hits included Purple Rain and When Doves Cry, was found dead in an elevator at his home in suburban Minneapolis on Thursday at the age of 57, shocking millions of fans around the world and prompting glowing tributes by fellow musicians.
Carver County Sheriff Jim Olson, whose office is investigating the circumstances of his death, said Prince was last seen alive by an acquaintance who dropped him off at his home at about 8 pm on Wednesday night.
Pop icon Prince dead at 57
"There were no obvious signs of trauma on the body," Olson told a news conference. "We have no reason to believe at this point that this was a suicide. The rest is under investigation."
The influential star, born Prince Rogers Nelson, was found unresponsive in an elevator at the Paisley Park Studios complex where he lived in the suburb of Chanhassen, authorities said.
Olson declined to say whether any items were recovered from the home by police, citing the ongoing investigation. He did say that no one else was found at the property.
Prince was treated for overdose before death, claims TMZ
The local medical examiner's office conducted a post-mortem examination on Friday morning for four hours but its results could be some time coming. Prince's body was released to his family on Friday afternoon, the Midwest Medical Examiner's Office added in a statement.
"As part of a complete exam, relevant information regarding Mr. Nelson's medical and social history will be gathered. Anything which could be relevant to the investigation will be taken into consideration," the statement said.
No information will be released until all results have been obtained, it added. "Gathering the results will take several days and the results of a full toxicology scan could likely take weeks," the medical examiner's office said.
Celebrities mourn Prince's death
Prince's music blended styles including rock, jazz, funk, disco and R&B, and it won him seven Grammy Awards as well as an Oscar. He had been on a US tour as recently as last week.
But he was briefly hospitalised a week ago after his plane made an emergency landing in Moline, Illinois, suffering from what his representative told celebrity news website TMZ was flu.
Nevertheless, the star hosted a party at Paisley Park last Saturday night at which one attendee said Prince played two tunes on a piano and then introduced fans to his doctor.