Mining magnate Gina Rinehart has been ordered to pay the legal costs of three of her children who are seeking to oust her as trustee of the multibillion dollar family trust.
In a NSW Court of Appeal judgment handed down on Monday, Australia's richest person was also ordered to pay the costs of several media companies who intervened in the case, including the ABC, Fairfax Media, Nine Network and Nationwide News.
Last September, John Hancock, Bianca Rinehart and Hope Welker launched the proceedings against their mother in a bid to remove her as trustee of the family trust.
They claim she acted with "gross dishonesty" and "deceitfully" in her dealings with the trust, set up in 1988 by her father Lang Hancock, with her children being the beneficiaries.
Ms Rinehart is supported by her youngest daughter, Ginia, in the battle.