New York (CNN Business) Apple has pulled business website Quartz's app from its store in China over content concerns.

Quartz said the tech company explained its app was being removed "because it includes content that is illegal in China." It didn't provide the publisher with any additional details.

The website, like others, has been aggressively covering the ongoing protests in Hong Kong and the NBA controversy in China.

Quartz CEO Zach Seward said in a statement to CNN Business that we "abhor this kind of government censorship of the internet." Quartz has a virtual private network-enabled website that lets users in the country skirt China's Great Firewall, which prevents internet users from accessing some foreign websites.

Apple AAPL didn't immediately respond to CNN Business' request for comment. The country has pulled publisher's apps in the past, including the New York Times in 2017.

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