Priscilla Presley's former business partner,
Brigitte Kruse, is currently suing Priscilla's son,
Navarone Garcia, for breach of contract ... but what's way more interesting in new legal docs filed in the case is that Kruse alleges John and Kelly used
Riley Keough's eggs to give birth to their son,
Ben.
In the papers, Kruse alleges
Michael Lockwood --
Lisa Marie Presley's ex-husband -- told her Kelly had been unable to bear her own children. Kruse claims John and Kelly previously used Lisa Marie’s eggs to get pregnant ... but they no longer wanted Lisa's eggs because they did not want “eggs with heroin" on them…
Priscilla's attorneys
Marty Singer and
Wayne Harman tell TMZ ... “After losing motion after motion in this case, and unsuccessfully seeking to have Presley’s counsel of record, Marty Singer, disqualified from representing her in this matter, Brigitte Kruse,
Kevin Fialko, and their co-conspirators have demonstrated that there is no bar too low, no ethical line that they are unwilling to cross in an effort to cause further pain to Priscilla Presley and her family."
They added ... "In a completely improper effort to exert undue pressure on Presley to retract her legitimate, truthful claims, Kruse and her co-conspirators have also sued Presley’s son, cousin, and assistant. These recent outrageous allegations have absolutely nothing to do with the claims in this case. The conduct of Kruse, Fialko, and their new lawyers (they are on their fourth set of attorneys) is shameful, and it absolutely will be addressed in court.”
John Travolta and his late wife, Kelly Preston, had three children together ... but their youngest kid is biologically a Presley ... this according to a bombshell legal document.
www.tmz.com