FBI Director Christopher Wray warned about the “threat” posed by Chinese companies such as TikTok due to the sway that Beijing’s government has over them.

The Biden administration is conducting a security review of the popular video-sharing social media app, and Wray was asked Tuesday what was currently being done to investigate Chinese Communist Party involvement with TikTok. Although the FBI chief said he was limited in discussing “a specific ongoing investigation,” he nevertheless wanted to discuss two “very important threats” posed by Chinese tech companies.