One year after Michael Jackson's death, his sister La Toya still insists that he was murdered.

"It was not an accident. Michael was murdered for his catalogue. That's the bottom line. He was murdered for his catalogue. They knew that he was worth so much more dead than alive," claims La Toya.

La Toya said, "From the day that I found out that Michael was no longer with us when my mother screamed 'He's dead' on the phone, I just went into this, 'who did it?' "

La Toya tells London's GMTV she's frustrated that more people haven't been held accountable for her brother's death.

"I just dont understand whats going on and why this taking so long and why the people that are responsible for this have not been given the justice that they deserve.  His children deserve the truth. I think his parents deserve the truth, his family and his fans," said La Toya.