Special Counsel Robert Mueller and his team now have information about Russian ads that appeared on Facebook during the election.
Facebook turned over data related to the ads, in addition to a so-called Russian "troll farm" believed to be behind them.
The social media company told lawmakers last week that it identified about 3,000 ads that were linked to fake accounts.
Facebook: Accounts from Russia bought ads during US campaign
Facebook: Accounts from Russia bought ads during US campaign
'Nothing to hide' on Russia meeting, Kushner says
Former FBI Director Mueller to lead Trump-Russia probe
Justice Dept. appoints special prosecutor in Trump-Russia probe.
Report a typo to the ABC13 staff