Enlarge / Facebook chief operating officer Sheryl Sandberg (left) and Twitter chief executive officer Jack Dorsey testify during a Senate Intelligence Committee hearing concerning foreign influence operations’ use of social media platforms, on Capitol Hill, September 5, 2018 in Washington, DC. (credit: Drew Angerer/Getty Images)

In the wake of a Senate committee hearing in which top officials from Facebook and Twitter testified, the Department of Justice issued a statement saying that it would be investigating social media firms.

“We listened to today’s Senate Select Committee on Intelligence hearing on Foreign Influence Operations’ Use of Social Media Platforms closely,” Devin O’Malley, a DOJ spokesman, said in a statement released to reporters on Wednesday morning. “The Attorney General has convened a meeting with a number of state attorneys general this month to discuss a growing concern that these companies may be hurting competition and intentionally stifling the free exchange of ideas on their platforms.”

The DOJ did not further explain by what criteria it would be examining these companies.