China has accused two Canadians of spying, as tensions between the nations grow over the possible extradition of a Huawei executive to the US.
Michael Kovrig, a former diplomat, and Michael Spavor, a businessman, were detained in December after Meng Wanzhou was arrested in Canada on suspicion of fraud and breaching sanctions on Iran.
Ms Meng is suing Canada over her arrest, which was made at the request of the US.
China has condemned Ms Meng’s arrest.
The diplomatic spat has hurt Canada-China relations, and the arrest of the two Canadians had been seen as Beijing’s retaliation for its detention of Ms Meng
Until now China had not provided detailed allegations against the pair, only saying that they were suspected of hurting China’s security.
The ICG told the BBC that the group was aware of Monday’s reports but had “heard nothing official about any charges being laid against our colleague, Michael Kovrig”.
“Michael’s work for Crisis Group has been entirely transparent and in the open as all who follow his work can attest. Vague and unsubstantiated accusations against him are unwarranted and unfair,” a spokesperson said.
The think tank has previously said his work involved meeting officials, academics and analysts and attending conferences.
Mr Spavor lives in the Chinese city of Dandong, which borders North Korea. He has close ties to the North Korean regime and brings foreign investors there on tours.
Canadian Prime Minister Justin Trudeau has called for the release of both men.
