Mueller obtains search warrant to find out who bought russian-linked ads on facebook

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Special counsel Robert Mueller and his team are now in possession of Russian-linked ads run on Facebook during the presidential election, after they obtained a search warrant for the information.

Facebook gave Mueller and his team copies of ads and related information it discovered on its site linked to a Russian troll farm, as well as detailed information about the accounts that bought the ads and the way the ads were targeted at American Facebook users, a source with knowledge of the matter told CNN.

The disclosure, first reported by the Wall Street Journal, may give Mueller's office a fuller picture of who was behind the ad buys and how the ads may have influenced voter sentiment during the 2016 election.

Facebook did not give copies of the ads to members of the Senate and House intelligence committees when it met with them last week on the grounds that doing so would violate their privacy policy, sources with knowledge of the briefings said. Facebook's policy states that, in accordance with the federal Stored Communications Act, it can only turn over the stored contents of an account in response to a search warrant.

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