Facebook removed over 800 accounts, pages and groups from the social media platform for engaging in what the company calls coordinated inauthentic behavior. Other accounts were taken down for brigading and mass reporting.

The largest number of removed Facebook accounts, pages, and groups (548 in total, alongside 86 Instagram accounts) were associated with a network primarily originating in China and targeting audiences in the United States, United Kingdom, Hong Kong, Taiwan, and Tibet.

“Our investigation found links to individuals in mainland China, including employees of Sichuan Silence Information Technology Co, Ltd, an information security firm, and individuals associated with Chinese state infrastructure companies located around the world,” the social media platform says.