The Canadian government has been granted access to Michael Spavor, the second Canadian citizen detained in China last week.

Canada's ambassador to China, John McCallum, met with Spavor on Sunday, according to Canada’s diplomacy department, Global Affairs Canada.

Savor and a second Canadian, Michael Kovrig, were separately arrested last week by Chinese authorities, both for allegedly “endangering China’s national security,” Beijing said.

Their detainments are seen as possible retaliation for Canada’s arrest of Chinese telecom executive Meng Wanzhou. The Huawei CFO and daughter of the company’s founder was detained on Dec. 1 while changing planes in Vancouver. She has been granted bail and faces possible extradition to the U.S., which charges that she facilitated financial transactions in violation of American sanctions against Iran.

Read more: In-Depth: The Shockwaves of Meng Wanzhou’s Arrest