Kovrig had carried out research on China's diplomatic ties to North Korea in his work on security issues for the ICG, a think-tank focusing on conflict resolution.
Hu Xijin, editor of the state-backed Global Times, a nationalistic tabloid, said on the Weibo social media platform the Chinese government would never concede that the Canadians' detentions were related to Meng's case.
Michael Spavor, a consultant in Chinese and North Korean trade, has been missing since he last made contact with Canadian officials.
He said Beijing security and state security officials in the city of Dandong, Liaoning Province had taken measures against Spavor and Kovrig.
His friendship with Kim Jong-un included jet-skiing together and savoring cocktails on one of the North Korean dictator's yachts.
She said any remarks from the US could be used by Meng's lawyers at her extradition hearing.
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David Mulroney, a former Canadian ambassador to China, said not only the US but other Western nations should be standing up for Canada. "If they want to send you a message, they will send you a message". Now China has the country in its cross-hairs, detaining two Canadians in apparent retaliation for the arrest of a top Chinese tech executive on behalf of the United States.
Canada has been unable to contact Spavor since he notified the government that he was being questioned by Chinese authorities, Foreign Ministry spokesman Guillaume Bérubé said in statement issued in Canada.
The Americans accuse Meng of committing bank fraud in connection with an alleged attempt to circumvent American sanctions against Iran.
Lu said the two Canadians legal rights are being "safeguarded".
Several countries around the world have now banned (or are trying to ban) Huawei's networking equipment, among fears that they could enable a backdoor for the Chinese government to conduct surveillance. During the proceedings, the Crown lawyer noted that the U.S.' 60-day-period to file a formal extradition request will end on January 8th, 2019.
The Global Times said there was no evidence Kovrig's arrest was in any way connected to the case, but added, "the assumption is because Canada has gone too far and people naturally believe China will retaliate". It said his case had been raised directly with Chinese officials. If convicted, she faces more than 30 years in prison.
The United States and China have emphasized that China-U.S. trade talks are separate from the case against Meng, though President Donald Trump obliterated the distinction Tuesday, saying he'd intervene if it would help produce a trade agreement with China.
"I was stunned to hear of Mike's apparent arrest, which is now the talk of the town in Seoul's NGO, journalistic and diplomatic circles", Andrew Salmon, the Asia Times Northeast Asia correspondent and editor, said.
"This is a situation we are watching closely as the political environment is unpredictable and could have significant negative consequences", Cam Dahl, president of Cereals Canada, an industry group whose members include grain handlers Richardson International Ltd., Cargill Inc., and Glencore Plc's Viterra unit, said in an email.