Facebook has turned over its recent findings regarding Russian Facebook ads to Robert Mueller, the special counsel heading up the investigation of alleged Russian interference in the 2016 presidential election.

Facebook announced Wednesday $100,000 was purchased for ads from June 2015 to May 2017 by a Russian “troll farm” called the Internet Research Agency, which has promoted pro-Russian propaganda. The money was connected to approximately 3,000 ads and 470 “inauthentic accounts and pages.”