There may be more ‘Chinese police stations’ operating in Canada, the public security minister told a Canadian TV station on Sunday, months after police said they were investigating the use of two community centers in Montreal to intimidate or harass Chinese Canadians.

“I am convinced that the [Royal Canadian Mounted Police] have taken concrete steps to end all foreign interference regarding so-called police stations, and if new police stations are established, etc., they will continue to take decisive action in the future,” said Marco Mendicino at CTV’s Question Period in an interview.

In March, Canadian police said they were investigating the centers in Montreal. Earlier this month, the Canadian press reported that the centers were operating normally, despite statements by the minister that all secret stations in Canada had been closed.

China has denied the accusations of interfering in Canadian affairs.

Mendicino’s comments follow diplomatic expulsions from Ottawa and Beijing.

Last week, Canada expelled Chinese diplomat Zhao Wei after an intelligence report accused him of trying to target a Canadian lawmaker who criticized China’s treatment of the Uyghur Muslim minority.

The next day, China expelled Canadian diplomat Jennifer Lynn Lalonde from Shanghai.

Canadian Prime Minister Justin Trudeau’s government is under pressure to quell suspicions of Chinese interference and open a public inquiry into the matter. His government has appointed a special investigator to investigate the matter.

Canadian media have published several reports citing allegations from unnamed intelligence sources that the Chinese government has set up schemes to interfere in Canada’s last two elections. Beijing has denied these allegations.

Trudeau said China tried to interfere in the 2019 and 2021 polls, but that didn’t change the result.

Trudeau said last week that Canada “will not be intimidated” by Chinese retaliation.