(Corrects second paragraph trade war reference to China, not Canada)
By David Ljunggren
OTTAWA, Dec 19 (Reuters) - A third Canadian has been detained in China following the arrest of a Chinese technology executive in Vancouver, a Canadian government official said on Wednesday amid a diplomatic dispute also involving the United States.
The detentions of the Canadians followed the Dec. 1 arrest in Vancouver of Meng Wanzhou, chief financial officer of the Chinese telecommunications giant Huawei Technologies Co Ltd. , at the request of the United States, which is engaged in a trade war with China.
The Canadian official, who spoke on the condition of not being identified, said there is no reason to believe the latest detention is linked to the previous arrests. The official gave no details of the latest incident.
Last week two Canadians - former diplomat Michael Kovrig and businessman Michael Spavor - were detained by China amid the diplomatic quarrel triggered by Meng's arrest.
The Canadian government has said several times it saw no explicit link between the arrest of Meng, the daughter of Huawei’s founder, and the detentions of Kovrig and Spavor. But Beijing-based Western diplomats and former Canadian diplomats have said they believed the detentions were a "tit-for-tat" reprisal by China.
Bob Rae, Canada's special envoy to Myanmar and a former Liberal Party leader, tweeted on Wednesday that "there are no coincidences" and said the detentions look "too much like hostage taking."
An official at the Chinese embassy in Ottawa said the embassy had no information to release on the issue.
Meng is accused by the United States of misleading multinational banks about Iran-linked transactions, putting the banks at risk of violating U.S. sanctions. She was released on bail in Vancouver, where she owns two homes, while waiting to learn if she will be extradited to the United States. She is due in court on Feb. 6.
U.S. President Donald Trump told Reuters last week he might intervene in the case if it would serve national security interests or help close a trade deal with China.
The comments upset Canada, which warned the United States against politicizing extradition cases.
A source with direct knowledge of the situation said senior officials at the Canadian Foreign Ministry had held many meetings about the detainees but that a formal task force had yet to be created.
"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.
A second source said Canada was concerned that the detainees were in the hands of the powerful security authorities.
"Even if there were voices of reason in the Chinese system saying, 'Are you crazy? The Canadian government cannot order a judge to release Ms. Meng,' the security voices are going to trump them," the source said.
Philip Calvert, a former diplomat in China and now a research fellow at the University of Victoria, said at least the first two detentions were indicative of "the way China often engages internationally in situations like this."
"The people making the decisions in Beijing really think when push comes to shove, they can put pressure on Canada to override the system," he said.
The last time Canadians were detained in China for security reasons was in 2014 when Kevin and Julia Garratt, who ran a coffee shop in northeastern China, were held near the border with North Korea. She was released and left the country while her husband was charged with spying and stealing state secrets before being released and deported two years later.
The arrest of the Garratts came shortly after a Chinese businessman was picked up on a U.S. warrant in Canada.
If extradited to the United States, Meng would face charges of conspiracy to defraud multiple financial institutions, with a maximum sentence of 30 years for each charge.
China has protested her arrest to the U.S. ambassador and said Washington should withdraw its arrest warrant.
Huawei is the world’s biggest supplier of telecoms network equipment and second biggest smartphone seller. The United States has been looking since at least 2016 into whether Huawei shipped U.S.-origin products to Iran and other countries in violation of U.S. export and sanctions laws, Reuters reported in April.
Destination Canada, a government-run promoter of Canadian tourism, said it was suspending marketing in China due to the "exceptional circumstances." (Reporting by Ben Blanchard, Philip Wen and Christian Shepherd in Beijing, Allison Martell and Anna Mehler Paperny in Toronto and David Ljunggren in Ottawa Writing by Bill Trott Editing by Bernadette Baum and Alistair Bell)