https://www.cnbc.com/2017/09/06/facebook-gave-special-counsel-robert-mueller-data-on-russian-ads-report-says.html

Facebook has turned over all information about ads "likely" purchased by Russian operatives to special counsel Robert Mueller, according to a report.

A source familiar with the matter told Reuters on Wednesday that the social media giant had sent the former FBI director data including copies of the ads and the identity of the buyers. That report followed news that an internal Facebook investigation found it is agents of the Kremlin may have spent $100,000 on ads with "divisive messages" between June 2015 and May 2017.