The story is obviously developing, but reports claim that Jackson was rushed to Ronald Reagan UCLA medical center shortly after noon Los Angeles time. He was found not breathing, and arrived at the hospital in a coma. He was pronounced dead shortly after.
As our small tribute, here's a video of Jackson at his height performing "Off The Wall" at one of the two Orange Bowl stops on his 1984 Victory Tour. The tour included sets by the Jackson 5, as well as Michael solo. It seems to be the only time Jackson performed as a solo artist in the city.