Huawei Technologies Co. Chief Financial Officer Meng Wanzhou failed to convince a Canadian judge to grant her access to confidential documents pertaining to her extradition fight.

Meng has pressed for additional disclosure about the circumstances of her arrest at Vancouver’s airport on a US handover request in December 2018. She argues her arrest was unlawful and that her extradition case should be dismissed.

In August, she sought an order from the Supreme Court of British Columbia to force the Canadian government to authorise full access to documents she said had been redacted or withheld arbitrarily. Canada argued that divulging them would violate confidentiality agreements with clients and third parties.

Associate Chief Justice Heather Holmes upheld a majority of Canada’s privilege claims, Canada’s Department of Justice said in a statement late Thursday, without providing further details on the ruling. Holmes’ decision wasn’t immediately available from the courthouse after hours.

It’s the latest setback for Meng — eldest daughter of Huawei’s billionaire founder Ren Zhengfei — who lives under house arrest at a Vancouver mansion she owns. In May, Meng saw her first shot at release quashed when Holmes ruled that her case met a key test of Canada’s extradition law. Three months later, a federal court rejected her bid to access documents withheld on national security grounds.

One of Meng’s legal strategies is to show that there was an abuse of process so serious during her arrest that it warrants throwing out her extradition case. She accuses Canadian border agents, police and the US Federal Bureau of Investigation of unlawfully using the pretext of an immigration check to get her to disclose evidence they could use against her. Border agents have said that they shared in error her device passwords with police.

Meng is next scheduled to appear in court from October 26 to 30 at a hearing where witnesses from Canada’s border agency and federal police will testify.

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