The account suspensions were made after U.S. 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. The social media company said in a blog post late Monday that it shut down 30 Facebook accounts and 85 Instagram and says it's investigating them in more detail.
It said it would provide an update once it knew more, including whether the accounts were linked to the Russia-based Internet Research Agency, widely recognised as a "troll factory" which ran fake ads on social media during the 2016 United States election.
A study published last week found that misinformation on social media was spreading at a greater rate than during the run-up to the 2016 presidential vote, which Russian Federation is accused of manipulating through a vast propaganda campaign in favor of Donald Trump, the eventual victor.
Facebook has blocked 115 accounts federal authorities told it were acting suspiciously and might be "linked to foreign entities" and coordinating their activities.
She said Russian "trolls", or provocateurs, were likely stoking sentiments on both ends of the USA political spectrum "but that the network we now have identified is targeting the far right of American political discourse".More news: Melbourne Cup winning jockey Kerrin McEvoy pre-race promise to wife
Russian President Vladimir Putin has denied directing an interference campaign in support of Donald Trump's presidency.
"But given that we are only one day away from important elections in the U.S., we wanted to let people know about the action we've taken and the facts as we know them today".
Facebook's purge is part of countermeasures to prevent abuses like those used by Russian groups two years ago to sway public opinion ahead of the 2016 USA presidential election. The accounts focused on everything from political debate to celebrities, though it remains unclear the extent to which the users were attempting to influence voters or distribute propaganda, if at all.
The company removed 30 Facebook accounts and 85 Instagram accounts.
Facebook company opened a war room earlier this year in an effort to combat election interference around the globe.