Lawyers for Britain's Prince Andrew want to question his accuser Virginia Giuffre's husband and her psychologist as part of his civil sex case.
Lawyers for the Prince argue that Ms Giuffre "may suffer from false memories", and say that her psychology should be examined on "theory of false memories" among other topics including matters discussed during their sessions.
According to court documents, the residents of Australia would be requested to be examined under oath, either in person or by video link.
The legal requests come after the news earlier this week that a judge had thrown out a motion by Prince Andrew's lawyers to dismiss the case, ruling it can go to trial.
Prince Andrew's lawyers have requested that the US court issues letters to the Central Authority of Australia for assistance in obtaining the testimony.
Ms Giuffre is suing the duke in the US for allegedly sexually assaulting her when she was a teenager.
She claims she was trafficked by Prince Andrew's friend, convicted sex offender Jeffry Epstein and that Prince Andrew had sex with her against her will at Ghislaine Maxwell's London home and at Epstein's mansion on the Upper East Side of Manhattan in the United States.
It is also alleged that Prince Andrew abused Ms Giuffre on another occasion during a visit to Epstein's private island, Little St James, and on a separate occasion at Epstein's Manhattan mansion.
Prince Andrew has denied the allegations and the trial is scheduled to take place later this year, between September and December.
