VANCOUVER -- Huawei executive Meng Wanzhou's case is scheduled to return to court today, when arguments over the disclosure of documents is expected to be heard ahead of her extradition trial.

In court documents released last month, the defence has argued Meng was unlawfully detained at Vancouver's airport last December at the direction of American authorities.

Meng's lawyers allege Canadian officials acted as "agents" of the Federal Bureau of Investigations, but they say the question that remains is to what extent and how the FBI was involved in what they describe as a "scheme."

None of the allegations in the case have been tested in court.

Meng was arrested at the behest of the United States, which is seeking her extradition on fraud charges in violation of sanctions with Iran.

Both Meng and Chinese tech giant Huawei have denied any wrongdoing.

Her arrest sparked a diplomatic crisis between Canada and China.

Meng is the chief financial officer of Huawei and the daughter of the company's founder.

Her extradition trial won't begin until Jan. 20. Meng is free on bail and living in Vancouver.

This report from The Canadian Press was first published on Sept. 23, 2019.