A law enforcement official tells The Associated Press that the Los Angeles County coroner has ruled Michael Jackson's death a homicide.
The finding makes it more likely criminal charges will be filed against the doctor who was with the pop star when he died.
The official says the coroner determined a fatal combination of drugs was given to Jackson hours before he died in his rented Los Angeles mansion on June 25. The official spoke on condition of anonymity because the findings have not been publicly released.
Forensic tests found the powerful anesthetic propofol in Jackson's system along with two sedatives, the official says.
Dr. Conrad Murray, Jackson's personal physician, is the target of a manslaughter probe headed by Los Angeles police.