The Associated Press

LOS ANGELES - Michael Jackson, the sensationally gifted "King of Pop" who emerged from childhood superstardom to become the entertainment world's most influential singer and dancer before his life and career deteriorated in a freakish series of scandals, died Thursday, a person with knowledge of the situation told The Associated Press. He was 50.

The person said Jackson died in a Los Angeles hospital. The person was not authorized to speak publicly and requested anonymity.

The circumstances of his death were not immediately clear. Jackson was not breathing when Los Angeles Fire Department paramedics responded to a call at his Los Angeles home about 12:30 p.m., Capt. Steve Ruda told the Los Angeles Times. The paramedics performed CPR and took him to UCLA Medical Center, Ruda told the newspaper.

Jackson's death brought a tragic end to a long, bizarre, sometimes farcical decline from his peak in the 1980s, when he was popular music's premier all-around performer, a uniter of black and white music who shattered the race barrier on MTV, dominated the charts and dazzled even more on stage.

His 1982 album "Thriller" -- which included the blockbuster hits "Beat It," "Billie Jean" and "Thriller" -- remains the biggest-selling album of all time, with more than 26 million copies.

He was perhaps the most exciting performer of his generation, known for his feverish, crotch-grabbing dance moves, his high-pitched voice punctuated with squeals and titters. His single sequined glove and tight, military-style jacket were trademarks second only to his ever-changing, surgically altered appearance.

As years went by, he became an increasingly freakish figure. His skin became lighter and his nose narrower. He surrounded himself with children at his Neverland ranch, often wore a germ mask while traveling and kept a pet chimpanzee named Bubbles as one of his closest companions.

In 2005, he was cleared of charges he molested a 13-year-old cancer survivor at Neverland in 2003. He had been accused of plying the boy with alcohol and groping him. The case took a fearsome toll on his career and image, and he fell into serious financial trouble.