In a scathing five-page letter, Michael Jackson's family has accused the executors of his estate, John Branca and John McClain, of forging his will and have called for their immediate resignation.

In the letter, obtained by, the late King of Pop's siblings, Janet, Rebbie, Tito, Randy and Jermaine Jackson write, ''At the time we couldn't possibly fathom what is so obvious to us now: that the Will, without question, it's Fake, Flawed and Fraudulent." The letter continues, ''Since the passing of Michael, our beloved brother, you have failed to perform your duties as executors of his estate, but what you have not failed at is taking advantage of a grieving mother, father and a grieving family."

MJ's siblings go on to state that they have proof that their brother never signed the document in question. ''The Will that you presented did not have our brother's signature on it, nor did it have a signature page attached to it. When asked about the missing signature page, John Branca replied, 'it was on its way, and you were having just a little problem finding it.' Amongst many other inconsistencies in the Will, there is also a conflict around Michael's location on the day he supposedly signed the Will, July 7, 2002. We have evidence that undoubtedly supports and proves that Michael was absolutely not in Los Angeles, California, on the date of his signature reflected in the Will at-hand.''

''Our brother told us, in no uncertain terms and without hesitation in the months prior to his death, that he despised both of you and that he did not want either of you to have anything to do with his life or estate for that matter," the Jackson siblings claim.

The accused have since released a statement in response to the letter, painting Jackson's siblings as sore losers due to their exclusion from the will. "We are saddened that false and defamatory accusations grounded in stale Internet conspiracy theories are now being made by certain members of Michael's family whom he chose to leave out of his will," Branca and John McClain said.

Branca and McClain's attorney Howard Weitzman was quick to point out that the accusations have already failed in court, telling, "Any doubts about the validity of Michael's will and his selection of executors were thoroughly and completely debunked two years ago when a challenge was rejected by the Los Angeles Superior Court, the California Court of Appeals, and finally, the California Supreme Court."

See Michael Jackson Through the Years


Watch "Michael Jackson by the Numbers"

More From TheBoombox