The Chinese Foreign Ministry, on the other hand, stated on Wednesday that it was not aware of any new Canadians detained in China.
Michael Kovrig, a diplomat on leave from his post in Hong Kong, and Michael Spavor, entrepreneur who helped organize tourist trips to North Korea, were seized by Chinese state security officers nine days after Huawei Chief Financial Officer Meng Wanzhou was taken into custody on Canada's Pacific coast. The main issue is the legal and political environment in the People's Republic of China, where Huawei and ZTE primarily operate.
In an op-ed in the Globe and Mail, Chinese ambassador Lu Shaye said Meng's arrest was a "miscarriage of justice", given that she wasn't charged under Canadian law.
Ms Meng has been bailed but may face extradition to the United States on charges of violating American sanctions on Iran through Huawei's business dealings.
Trudeau said one of the lessons he has learned throughout his three years in office and having to deal with complex consular issues is that every case is different and one can not use "one-size-fits-all cookie cutter approach" to all of them.
Global Affairs said consular officials are helping the family of the detained person.
Though Meng has been granted bail, she faces possible extradition to the United States for allegedly doing business with Iran in violation of USA sanctions.
A third Canadian has been detained in China amid a diplomatic spat between Beijing and Ottawa over the arrest of a Chinese telecom executive.
Huawei has become the target of US security concerns because of its ties to China's government.
China has taken a "rob, replicate and replace approach to economic development" in stealing intellectual property from companies in the US and other countries, Demers said.
Ken Hu said his company will invest two billion dollars over the next five years to upgrade security infrastructure and make it even more effective.
The move angered China that said Canada would face "grave consequences" if Meng was not allowed to go free. Her previous request to be released on bail was rejected as she was deemed a flight risk.
"At this point, Canada is trying to buy time by stressing it has a rules-based order and an independent judiciary", said the source, who declined to be identified because of the sensitivity of the situation.