It was confirmed on Thursday that Michael Spavor, a businessman, had been detained in addition to former diplomat Michael Kovrig.

Canada drew Chinese protests after it arrested an executive at telecoms giant Huawei at the request of the US.

Meng Wanzhou has been bailed but may face extradition for fraud.

She denies violating US sanctions on Iran through Huawei's business dealings. China has threatened unspecified consequences if she is not released.

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