Police investigating the death of Michael Jackson will bring charges of second-degree murder within days, according to a new U.K. report.

Britain's News of the World newspaper claims cops have told the King of Pop's family there will be a criminal trial after an autopsy showed he died from an injected overdose of painkiller Diprivan.

The charges could be brought against whoever administered the drug and anyone who made it available to the Thriller hitmaker.

Jackson's longterm friend Terry Harvey tells the publication, "The autopsy shows that Michael died of a drug overdose with Diprivan and a range of pills in his stomach. He had needle marks on his neck and all over his body.

"The authorities have told the family the Drug Enforcement Administration are pushing for a criminal charge. It is likely to be second-degree murder, due to the actions which led to his death. They have been assured that someone, or maybe more than one person, will be brought to trial.

"The family are working with the DEA and Los Angeles Police Department to work out which doctor prescribed Michael these drugs and how far back this serious problem runs."

Attorney General Jerry Brown admitted earlier this week, "We've found some things, but this is early on", and murder or manslaughter charges could not be ruled out.

Harvey adds, "The family is speaking about whether there is enough evidence to take a private lawsuit against the promoters or the doctors involved. Once the criminal charges are announced, the family will file for a wrongful death lawsuit.

"I can see Joe filing a lawsuit against anyone who is found to have caused fatal harm to his beloved son.

"He and the rest of the family are serious about getting to the bottom of his son's death and insists it's foul play. It's no secret that (tour promoters) AEG appointed a doctor to look after Michael's welfare."