Facebook blocked more than 100 Facebook and Instagram accounts with potential ties to a so-called Russian "troll farm" ahead of the U.S. midterm elections, the company said Wednesday.
The firm said it received a tip-off from law enforcement about the accounts, which it says may be linked to Russia's Internet Research Agency (IRA), one of the groups that was indicted earlier this year over allegations it interfered in the 2016 presidential election.
Nathaniel Gleicher, Facebook's head of cyber security policy, said the firm blocked the accounts on Monday night on concerns that they were linked to the Russian state-backed organization, adding that they "engaged in coordinated inauthentic behavior, which is banned from our services."
The statement follows a previous announcement from Facebook on Monday, in which the company said it had shuttered 115 accounts — 30 of those being Facebook accounts and 85 being Instagram accounts.
"Almost all the Facebook Pages associated with these accounts appear to be in the French or Russian languages, while the Instagram accounts seem to have mostly been in English — some were focused on celebrities, others political debate," Gleicher said in a blog post at the time.
On Tuesday, Facebook's Gleicher said a website purporting to be set up by Russia's IRA published a list of Instagram accounts which they claimed to have created.