Meng Wanzhou, chief financial officer of Chinese telecoms giant Huawei, is facing fraud charges relating to alleged breaking of US sanctions on Iran, a Canadian court has heard.
Details of the charges were revealed when a publication ban was lifted by a judge in Vancouver.
Ms Meng, daughter of Huawei’s founder, was arrested in the city on Saturday and faces extradition to the US.
The court is deciding whether or not to allow bail.
China has demanded Ms Meng’s release, insisting she has not violated any laws.
What happened in court?
On Friday, the Supreme Court of British Columbia was told that Ms Meng had used a Huawei subsidiary called Skycom to evade sanctions on Iran between 2009 and 2014.
They said she had publicly misrepresented Skycom as being a separate company.
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Ms Meng faces up to 30 years in prison in the US if found guilty of the charges, the court heard.
Court reporters said she was not handcuffed for the hearing and was wearing a green sweatsuit.
Why was the arrest significant?
The arrest has put further strain on US-China relations. The two countries have been locked in trade disputes, although a 90-day truce had been agreed on Saturday – before news of the arrest came to light on Wednesday.
Huawei is one of the largest telecommunications equipment and services providers in the world, recently passing Apple to become the second-biggest smartphone maker after Samsung.
Ms Meng’s arrest was not revealed by Canadian authorities until Wednesday, the day of her first court appearance.
Details of the charges were also not revealed at the time after she was granted a publication ban by a Canadian judge.
Canadian foreign minister Chrystia Freeland said on Friday that China had been assured that due process was being followed and Ms Meng would have consular access while her case was before the courts.
“Canada is a rule-of-law country and we follow our procedures, our laws and our agreements,” she told journalists during a press teleconference.
“Due process has been, and will be, followed in Canada.”
Ms Freeland reiterated Prime Minister Justin Trudeau’s claim that Ms Meng’s arrest had “no political involvement”.
Does Huawei concern the West?
Some Western governments fear Beijing will gain access to fifth-generation (5G) mobile and other communications networks through Huawei and expand its spying ability, although the firm insists there is no government control.
Japan is expected to ban government use of products made by Huawei and ZTE over cybersecurity concerns, local media reported on Friday. It would follow moves by New Zealand and Australia to block Huawei.
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US National Security Adviser John Bolton said his country has had “enormous concerns for years” about the practice of Chinese firms “to use stolen American intellectual property, to engage in forced technology transfers, and to be used as arms of the Chinese government’s objectives in terms of information technology in particular”.
“Not respecting this particular arrest, but Huawei is one company we’ve been concerned about,” he said.
What does China say?
A Chinese foreign ministry spokesperson told reporters: “The detention without giving any reason violates a person’s human rights.”
“We have made solemn representations to Canada and the US, demanding that both parties immediately clarify the reasons for the detention, and immediately release the detainee to protect the person’s legal rights.”