Canada's privacy czar said Thursday that he is taking Facebook to court after finding that lax practices at the social media giant allowed personal information to be used for political purposes.

A joint report from privacy commissioner Daniel Therrien and his British Columbia counterpart said major shortcomings were uncovered in Facebook's procedures. It called for stronger laws to protect Canadians.

The commissioners expressed dismay that Facebook had rebuffed their findings and recommendations. Facebook insisted it took the investigation seriously. The company said it offered to enter into a compliance agreement.

The Canadian report comes as Ireland's privacy regulator is investigating Facebook over the company's recent revelation that it had left hundreds of millions of user passwords exposed.

The Canadian probe followed reports that Facebook let an outside organization use an app to access users' personal information and that some of the data was then passed to others. Recipients of the information included the firm Cambridge Analytica.

The app, at one point known as "This is Your Digital Life," encouraged users to complete a personality quiz but collected much more information about those who installed the app as well as data about their Facebook friends, the commissioners said.

About 300,000 Facebook users worldwide added the app, leading to the potential disclosure of the personal information of approximately 87 million others, including more than 600,000 Canadians, the report said.