The lawsuit, filed by more than a dozen states, alleges TikTok purposefully manipulates younger users into remaining on the app.

More than a dozen states are filing lawsuits Tuesday accusing TikTok of harming the well-being of children by using addictive product features that keep them hooked on the platform, in a bipartisan salvo that amplifies the company’s legal perils as it tries to stave off a federal ban.

North Carolina’s attorney general sued TikTok and its parent company ByteDance on Tuesday, alleging that the app is addictive for children and demanding the company change its policies and pay penalties.