The FBI monitored social media on Election Day last year to track a campaign of "fake news," believed to be orchestrated by Russia to benefit the Trump campaign, according to a report Friday.

CNN reports that dozens of agents and analysts were stationed at a command center watching social media feeds sharing stories thought to be part of a Russian disinformation campaign.

Many of the stories, shared on Facebook and Twitter, were used to spread viral news stories focused on making false claims about Hillary Clinton, the Democratic nominee for president.

Teams at the FBI, Homeland Security Department and the Office of the Director of National Intelligence held conference calls with the White House every three hours on Election Day to report updates.

U.S. intelligence agencies have confirmed Russian interfered in the 2016 election, and part of its efforts including spreading disinformation. Multiple committees in Congress and special counsel Robert Mueller are investigating Russia's election intrusion, and the possibility the Trump campaign conspired with Russia.