Forensic tests found the anesthetic propofol combined with at least two sedatives to kill Jackson, according to the official, who spoke Monday on condition of anonymity because the findings have not been publicly released. Based on those tests, the Los Angeles County Coroner has ruled the death a homicide, the official said.

The coroner's homicide ruling does not necessarily mean a crime was committed. But it makes it more likely criminal charges will be filed against Dr. Conrad Murray -