Michael Jackson was rushed to a Los Angeles hospital after going into cardiac arrest and died this afternoon, according to TMZ. Jackson had been rehearsing in LA for his highly-anticipated series of concerts in London, though he has been dogged by rumors of being physically unable to make it through all the routines. Jackson's mother and brothers are at the hospital. He is survived by his children Michael Joseph Jackson, Jr., Paris Michael Katherine Jackson, and Prince "Blanket" Michael Jackson Jr. Producer Quincy Jones said of Jackson's death: "I am absolutely devastated at this tragic and unexpected news. For Michael to be taken away from us so suddenly at such a young age, I just don't have the words."