The account suspensions were made after USA law enforcement officials contacted Facebook Sunday evening about recently discovered online activity believed "may be linked to foreign entities", Nathaniel Gleicher, Facebook's head of cybersecurity policy, wrote in a blog post Monday.
SAN FRANCISCO: Facebook said Monday it had blocked some 30 accounts on its platform and 85 accounts on photo-sharing social network Instagram over concerns they may be linked to foreign entities and aimed at interfering in USA midterm elections. The accounts were blocked and a further investigation is underway.
Facebook said it had blocked the accounts flagged by authorities, but it is not clear how active the accounts had been, nor what the manner of their "inauthentic behaviour" was.
The Instagram accounts were mostly in English and were focused either on celebrities or political debate.
This year's contest has been portrayed as crucial by both Republicans and Democrats because both chambers of Congress, and the accompanying ability to pass or reject President Donald Trump's agenda, are up for grabs.
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Facebook late Monday said it had received a tip from federal law enforcement and responded by taking down 85 Instagram accounts and 30 Facebook accounts.
"But given that we are only one day away from important elections in the United States, we wanted to let people know about the action we've taken and the facts as we know them today".
Social media companies say they are now more vigilant against foreign and other potential election interference after finding themselves unprepared to tackle such activity in the USA presidential election two years ago. Tim was among a group of journalists the company invited to tour the "war room" Facebook has established at its headquarters in Menlo Park, Calif.
Facebook has taken action against a number of Facebook and Instagram accounts which appear to be spreading fake news days ahead of the midterm US elections.
Facebook didn't always take the risk of election interference seriously, however.