Michael Jackson, the child star turned King of Pop who set the world dancing but whose musical genius was overshadowed by a bizarre lifestyle and sex scandals, died on Thursday. He was 50.

Jackson was pronounced dead at 2:26 p.m. PDT (9:26 p.m. EDT) after arriving at a Los Angeles hospital in full cardiac arrest, said Fred Corral of the Los Angeles County Coroner’s office. The cause of death was not known and an autopsy would likely take place on Friday, he said.

Jackson was taken ill at home and his personal physician tried to resuscitate him but could not, his brother Jermaine told reporters. He was taken by paramedics to the hospital, where doctors worked for more than an hour to try to revive him before pronouncing him dead, the brother said.

Late Thursday, his body was flown by helicopter from the hospital to the coroner’s office.

The self-styled "King of Pop," whose hits included "Thriller" and "Billie Jean," leaves behind a mountain of debt and an unfulfilled series of comeback concerts set for London in July. Many hoped the shows would rake in millions and erase his financial troubles.

Jackson’s dramatic, one-gloved stage presence and innovative dance moves were imitated by legions of fans around the world who mourned his death.

His lifetime record sales tally was believed to be around 750 million. With his 13 Grammy Awards and boundary-breaking music videos he was one of the most successful entertainers of all time.

But Jackson’s belief that "I am Peter Pan in my heart," his preference for the company of children, his friendship with a chimp, his high-pitched voice and numerous plastic surgeries also earned him critics and the nickname "Wacko Jacko."

Jackson led a reclusive life after his acquittal in 2005 on charges of child molestation, the second time he had faced ultimately unproved allegations of abuse of young boys.

"I am absolutely devastated at this tragic and unexpected news," said Quincy Jones, who helped arrange the music on the album "Thriller" and produced the "Off the Wall" album, said in a statement.

Celebrity tributes poured in for the singer who was one of the first black entertainers of the MTV generation to gain a big crossover following.

Pop star Madonna said: "I can’t stop crying over the sad news … I have always admired Michael Jackson. The world has lost one of the greats but his music will live on forever."