Canada has banned the use of the Chinese social media app TikTok on all government mobile devices starting Tuesday, the National Post reported Monday, citing an official notice sent to federal government officials.

The decision was made by Canada’s chief information officer to ensure the security of government information after an internal review found that TikTok’s data collection practices could leave users vulnerable to cyberattacks, the newspaper reported.

The move, which comes days after the European Commission imposed a similar ban, underscores the growing lobbying against TikTok over concerns about its closeness to the Chinese government and its storage of user data around the world.

Canadian federal and provincial privacy regulators are jointly investigating the app, owned by Chinese firm ByteDance Ltd, over concerns about the platform’s collection, use and disclosure of personal information.

Neither TikTok nor the Finance Board of Canada, which includes the office of the country’s chief information officer, had an immediate comment.

Canada’s actions are another potential source of friction in Sino-Canadian relations, which have been strained in recent years for a variety of reasons, most recently over accusations by Ottawa that China tried to influence its elections and conducted aerial and maritime surveillance.

Beijing has denied the allegations and asked Ottawa to stop what it called baseless speculation and defamation.