Canada’s intelligence agency warned that arresting the daughter of billionaire Huawei founder Ren Zheng would set off global “shock waves” and seriously affect ties with China, just before her detention in Vancouver on a US extradition request, new court documents show.

Released on Friday, the documents show the involvement of the Canadian Security Intelligence Service (CSIS) in the December 2018 arrest of Meng Wanzhou, which soured diplomatic ties between Ottawa and Beijing, Denny Thomas wrote for Reuters late on June 13, 2020.

Meng is chief financial officer of China tech giant Huawei Technologies Co. Ltd, the company at the center of next generation 5G wireless technology and in a long-running dispute with the administration of US President Donald Trump.

A CSIS report was disclosed in the court documents as part of Meng’s extradition proceedings. In a redacted Dec. 1, 2018 memo, CSIS said it was advised by the US FBI of plans to arrest Meng when she arrived on a flight to Vancouver International Airport later that same day. “The arrest is likely to send shockwaves around the world,” CSIS said. “The planned event will be of great consequence internationally and bilaterally.”