Janet Jackson Reveals Why Michael Jackson's Death Was Planned So, Michael Jackson’s death at his Los Angeles mansion was attributed to an OD of Propofol, a surgical anaesthetic used in operating rooms. And yes, Michael Jackson's personal doctor Conrad Murray was found guilty of involuntary manslaughter for his part in MJ’s death, and he even served two years in prison. But trust me, it’s not as simple as that! #michaeljackson #janetjackson