L.A. County coroner's officials have found lethal levels of propofol, the powerful anesthetic, the Los Angeles Times reports, and has officially ruled his death a homicide. According to court documents, on the day of Jackson's death, Jackson's doctor, Conrad Murray, gave the singer valium and various other drugs to put him to sleep. Finally at 10:40 a.m., the doctor gave him 25 milligrams of propofol after Jackson insisted on being given the drug. Jackson died shortly thereafter. (Photo: WENN)