https://arstechnica.com/information-technology/2019/04/twitter-shuts-down-network-of-5000-possibly-saudi-pro-trump-bots/

Twitter has suspended over 5,000 accounts tied to a network amplifying a message denouncing the report by Special Counsel Robert Mueller as a "RussiaGate hoax." According to a researcher, the accounts—most of which had only posted three or four times in the past—were connected to other accounts previously used to post pro-Saudi messages.

In response to an inquiry by Ars, a Twitter spokeswoman said, "We suspended a network of accounts and others associated with it for engaging in platform manipulation—a violation of the Twitter Rules." An investigation into the network is still ongoing, the spokeswoman said, but no determination has yet been made about who was behind the campaign.