Prince found dead at his US estate just days after leaving hospital.
Prince’s publicist confirmed the popstar died at his home in Minneapolis.
The Purple Rain singer’s body was discovered at his Paisley Park home.
Carver County Sheriff’s Office Chief Deputy Jason Kamerud said a person was found unresponsive at Prince’s Minnesota home and was later declared dead, but refused to reveal the identity.
A representative for the local medical examiner declined to comment.
The 57-year-old is believed to have had been fighting flu for several weeks but sources claim he “felt considerably worse” on the flight.
He was taken to a nearby hospital for treatment but released three hours later, according to a spokesman for Prince.
Despite the medical emergency the 57-year-old appeared on stage the next day.
The singer- full name Prince Rogers Nelson- was a seven-time Grammy winner and sold more than 100 million records in his career.
Over the past three decades Prince has become a legendary figure in pop music since he first broke onto the scene in the seventies.
His unique blend of rock, R&B and soul has helped sell more than 100million records worldwide making him one of the most successful musicians of all time.
His biggest hits include Kiss and Purple Rain, the later of which was the title song of his debut film of the same name.
He was won seven Grammy Awards and an Academy Award and was inducted into the Rock and Roll Hall of Fame in 2004.
Three years later he gave a show-stopping performance during the Super Bowl half-time.
Last month the hitmaker revealed to an audience at a show in New York he is writing a memoir called The Beautiful Ones.
He said: “This is my first [book]. My brother Dan is helping me with it. He’s a good critic and that’s what I need. He’s really helping me get through this.”
The book, described as an “unconventional and poetic journey through his life”, will be released next year, according to publishing house Spiegel & Grau.