A baseless conspiracy theory held that she was cremated and that a casket supposedly for her was instead filled with classified and top secret documents.
In sum, no evidence has been presented to support the conspiracy theory that she was cremated, nor was there any proof that a casket supposedly for her instead contained additional secret documents beyond the hundreds that investigators had already uncovered. For these reasons, we have rated this claim as, "Unfounded."
For further reading, we recommend Mike Rothschild's extensive, in-depth article on The Daily Dot, titled, "Why Resistance Twitter still wants to dig up Ivana Trump’s grave." Rothschild called the rumors "a perfect storm for an unceasing conspiracy."