In response to a request from a committee of United Kingdom lawmakers, Facebook said it was looking to see whether there were coordinated attempts at interference that it hadn't previously identified.
Facebook's new search in Britain will require the company's security experts to go back and analyze historical data.
Facebook has promised to further investigate whether Russian Federation interfered in the Brexit referendum, Damian Collins, chair of the Digital, Culture, Media and Sport select committee in the House of Commons, said Wednesday.
Mr. Collins said he believes there is a growing body of evidence that Russian Federation interfered in the referendum.
The British government earlier reported that it has not found evidence of a successful Russian intervention in the democratic processes of the country, including in the referendum.
The work will take a "number of weeks", Milner said, adding a request for intelligence assessments or reports which could help the investigation. Many have urged more disclosure by Facebook, Twitter and other companies, which possess internal information about users and payments. At the same time, the company announced yesterday that they would begin to notify their US users who were exposed to Russian propaganda. In December, Facebook said in response to Collins' inquiry that a mere $0.97 was spent by Russia's Internet Research Agency on the referendum-related ads. In France past year, Facebook suspended 30,000 accounts in the days before the country's presidential election to try to stop the spread of fake news, misinformation and spam. "I look forward to seeing the results of this investigation, and I'm sure we will want to question Facebook about this when we know the outcome".
An independent investigation by the Guardian newspaper revealed that more than 400 bogus Twitter accounts run by the Russian agency have tried to meddle in British politics.