By Yong Xiong and Susannah Cullinane, CNN

(CNN) -- The Chinese Foreign Ministry is summoning the US and Canadian ambassadors in protest over the detention of a Huawei executive in Vancouver, describing it as "lawless" and "extremely vicious."

The tech giant's chief financial officer, Meng Wanzhou, was arrested December 1 and faces extradition to the United States, where she is accused of helping Huawei circumvent US sanctions on Iran.

In a statement on Sunday, China's vice minister of foreign affairs, Le Yucheng, said the US ambassador to China, Terry Branstad, is being summoned over Beijing's "strong protest against the US's unreasonable direction to Canada of detaining the Huawei executive." Le said China would like the United States to revoke the arrest warrant against Meng and allow her to be freed.

In a statement Saturday summoning Canadian Ambassador to China John McCallum, Le said Meng's arrest "severely violated the Chinese citizen's legal and legitimate rights and interests, it is lawless, reasonless and ruthless, and it is extremely vicious."

The statement also warned Canada of "serious consequences" if it doesn't release Meng.

China strongly urges Canada to "release the detainee immediately and earnestly protest the person's legal and legitimate rights and interests, otherwise it will definitely have serious consequences, and the Canadian side will have to bear the full responsibility for it," Le said in the statement.

Arrest warrant issued in August

Meng is believed to have helped Huawei circumvent US sanctions on Iran by telling financial institutions that a Huawei subsidiary was a separate company, Canadian prosecutors said at a hearing Friday to determine whether Meng should be released on bail.

Her lawyer said that she has ties to Canada and is not a flight risk. The judge, after hearing arguments from Meng's lawyer and prosecutors, did not rule on bail. The hearing will resume Monday at 1 p.m. ET.

Previously, details surrounding why Meng, 46, had been detained were limited due to a press ban. A judge had accepted Meng's request to bar both police and prosecutors from releasing information about the case prior to the hearing. The ban was lifted on Friday.

A judge in the US District Court for the Eastern District of New York issued a warrant for Meng's arrest on August 22, it was revealed at the hearing Friday. She was arrested on December 1.

Huawei 'not aware of any wrongdoing'

Earlier this week, Huawei said Meng was detained by Canadian authorities on behalf of the United States when she was transferring flights in Canada.

In a statement after Friday's hearing in Canada, Huawei said: "We will continue to follow the bail hearing on Monday. We have every confidence that the Canadian and US legal systems will reach the right conclusion."

The company has said it was "not aware of any wrongdoing by Ms. Meng" and that it "complies with all applicable laws and regulations where it operates."

In addition to her role as CFO, Meng serves as deputy chairwoman of Huawei's board. She is the daughter of Huawei's founder, Ren Zhengfei.

Meng's attorney said she would not breach a court order because doing so would embarrass her personally, and would also humiliate her father, Huawei and China itself. He added that the case against Meng had not been fully laid out, even though the US had signed off on her arrest warrant months ago.

"This isn't some last minute thing," he said.

Meng did everything she could to be transparent with Huawei's banking partners, and the company always worked to ensure its compliance with sanctions law, her lawyer continued.

Arrest came as US and China reached trade truce

Huawei is one of the world's biggest makers of smartphones and networking equipment and one of China's best-known companies. It is central to the country's ambitions to become a tech superpower.

But concerns that Huawei devices pose national security risks have hurt its ability to grow abroad.

The company has been repeatedly singled out by officials in the United States. US intelligence agencies have said American citizens shouldn't use Huawei phones, and US government agencies are banned from buying the company's equipment.

Huawei is a "bad actor," White House trade adviser Peter Navarro told CNN on Friday.

Navarro admitted that is was "unusual" that Meng's arrest came just as US President Donald Trump and Chinese President Xi Jinping reached a trade truce in Argentina, but said the government's actions are "legitimate."

"Let's look at what the indictment says and let the [Justice Department] do its thing," he said.