The full and final autopsy report and the complete toxicology report "will remain on security hold at the request of the Los Angeles Police Department and the Los Angeles County district attorney, " the coroner's office said.

CNN: Drugs that killed Jackson for clinical use only, experts say

Along with the police investigation, which is being aided by the state attorney general's office and the Drug Enforcement Administration, the Los Angeles County coroner's office has also drawn up a list of Jackson's doctors and is trying to talk to them to determine what drugs they may have prescribed him.

CNN: Portrait of Jackson's pill consumption emerges