Facebook took down more than 600 accounts tied to the pro-Trump conspiracy website The Epoch Times for using identities created by artificial intelligence to push stories about a variety of topics including impeachment and elections.

The network was called “The BL” and was run by Vietnamese users posing as Americans, using fake photos generated by algorithms to simulate real identities. The Epoch Media group, which pushes a variety of pro-Trump conspiracy theories, spent $9.5 million on ads to spread content through the now-suspended pages and groups.

“What’s new here is that this is purportedly a U.S.-based media company leveraging foreign actors posing as Americans to push political content. We’ve seen it a lot with state actors in the past,” Facebook’s head of security policy, Nathaniel Gleiche, said in an interview.