https://techcrunch.com/2018/11/06/facebook-ira/

The 115 accounts Facebook took down yesterday for inauthentic behavior ahead of the mid-term elections may indeed have been linked to the Russia-based Internet Research Agency, according to a new statement from the company. It says that a site claiming association with the IRA today posted a list of Instagram accounts it had made which included many Facebook had taken down yesterday, and it also has since removed the rest. The IRA was previously llabeled as responsible for using Facebook to interfere with US politics and the 2016 Presidential election.

Hours before US Election Day, Facebook pulls dozens of accounts for ‘coordinated inauthentic behavior’