MICHAEL Jackson's ruthless former fixer has threatened to reveal "even darker truths" about the star's alleged child abuse when he's freed from a 15-year jail sentence tomorrow.

Private investigator to the stars Anthony Pellicano - who called himself the "sin eater" - served as the King of Pop's feared pitbull when he was accused of molesting Jordy Chandler.

6 Michael Jackson's former private investigator is being released from prison tomorrow, bringing a whole host of secrets with him

6 Michael Jackson has been accused of child sexual abuse numerous times in the last 25 years Credit: AFP or licensors

But he said he "fired" Jackson when he discovered "even darker truths" about what he did to other boys.

Pellicano is being released on his 75th birthday tomorrow after serving time for litany of crimes including possession of plastic explosives, wiretapping, racketeering, protection, intimidation, witness tampering and destroying evidence.

And he is coming out with a huge number of celeb secrets in his pocket after gaining fame for going to great lengths to cover up the wrongdoings of the rich and famous.

He warned in a Newsweek interview in 2008: "A lot of people are quaking that I'm going to disclose a lot of things when I get out.

"They'll just have to keep quaking won't they?"

In the same interview he said of Jackson: "I quit because I found out some truths... He did something far worse to young boys than molest them."

And last year he told the Hollywood Reporter he was disgusted by truths "even darker" than the Chandler case.

He said: "I was offered $500,000 to tell the whole story by a tabloid and I declined."

A lot of people are quaking that I'm going to disclose a lot of things when I get out Anthony Pellicano in 2008

Pellicano played a huge part in Jackson's 1993 negotiations with Jordy's dad Evan Chandler.

The then 13-year-old claimed Jacko groomed and molested him leading to the superstar performer’s arrest and "humiliating" strip search.

Jordy was able to draw distinctive marks on Jackson’s penis and buttocks – as the Thriller icon suffered from the skin condition vitiligo.

Police in California then strip searched and photographed Jacko genitals.

The star, who denied all allegations of sex abuse, called that "the most humiliating ordeal of my life”.

But Pellicano talked Jordy's stepfather into recording conversations with Evan, who was heard saying there would be a "massacre... if I don't get what I want".

This formed the basis of Pellicano's claim the accusations were a part of an extortion plot and Jackson agreed a massive settlement with the Chandler family reported to between $20m and $24m.

The news of Pellicano's release comes after Jackson and his scandalous past came into the spotlight again after the release of the Leaving Neverland documentary, featuring fresh abuse claims by Jackson’s one-time fans Wade Robson and James Safechuck.

It has provoked fury within the Jackson family, but the duo’s lawyer Vince Finaldi said it could be a moment of final reckoning.

The two-part, four-hour documentary shows “gut-wrenching” interviews with James, now 40, and Wade, now 36, as well as their mothers, wives and siblings.

Channel 4 says the film is “a ­portrait of sustained abuse”, with the boys and their families “entranced by the star’s fairytale existence”.

6 Pellinaco will be released on his 75th birthday Credit: Splash News

6 Michael Jackson and his father Joe Jackson arrive at the Santa Barbara County Courthouse for his child molestation trial in 2005 Credit: AP:Associated Press

6 Jordy Chandler, then 13, accused Jackson of sexual abuse in 1993 Credit: Rex Features

6 Private investigator Anthony Pellicano walks into surrender at the Federal Detention Center in dowtown Los Angeles Monday morning at 11:30 a.m. to begin serving a 15-year sentence Credit: Getty - Contributor

Michael Jackson’s lawyer claims ‘Leaving Neverland’ deliberately manipulated his appearance to make superstar look guilty

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