Asked by Oprah if she blames Murray, Michael's former personal physician, for his death, Janet said: "Yes, I do. He's the one that was administering the drug, from what I do know." (Michael died of acute Propofol intoxication last June.)

Janet said that prior to her brother's passing, the Jackson family "knew that he had a problem" and "tried an intervention several times." She added, though, that Michael "was very much in denial."

She also said that the King of Pop's kids are doing "okay" in the aftermath of their iconic dad's death: "They're dealing with it. And thank God they have their family," she said.

Later, Janet was joined on the show by Tyler Perry, her director and co-star in 'Why Did I Get Married Too?', which opens today.

Tyler told Oprah he was very protective of Janet while shooting the film and even decided to change the ending "because [in the script] there was something that happened where she had to speak at a funeral."

Published 4/2/10 by