Facebook will give you copies of more than 3,000 advertising says it purchased in Russia around the time of the US presidential election, US investigators on Monday.
The technology giant also said it parts in which the advertising was targeted goal and how much they had cost.
Google is also reported to examine whether Russia advertising his services at this time.
Russia denies influencing the election, which was won by Donald Trump.
In a recent statement, Facebook general counsel Colin Stretch said, to share the decision that the data had been difficult.
“The disclosure of the contents is not something we do lightly, under any circumstances,” he wrote.
However, the data would not be made public.
“We believe that the public deserves a full accounting of what happened in the 2016 elections, we have found that the distribution of the ads we have discovered, in a manner consistent with our obligations to protect user-information that can help,” he said.
Last week, Twitter has been criticised by the US Senate Intelligence Committee for the offer “inadequate” briefing on the Russian interference in the election.
The social network said it was down over 200 accounts are linked to a Russian disinformation campaign.
Google said in a statement that they “work with queries”.