Facebook Chief Executive Mark Zuckerberg walks past members of the news media as he enters the office of U.S. Senator Josh Hawley (R-MO) while meeting with lawmakers to discuss "future internet regulation on Capitol Hill in Washington, September 19, 2019.

Facebook on Monday announced that it removed four networks of "coordinated inauthentic behavior" tied to Russia and Iran from its services as it launches new features designed to make posts related to the upcoming 2020 U.S. presidential election more transparent.

The company said it removed three networks of fake accounts and pages tied to Iran and another network with links to Russia's Internet Research Agency, the group that was accused of using Facebook and other websites to interfere with the 2016 U.S. presidential election.

"We took down these networks based on their behavior, not the content they posted," Facebook said in a post. "In each case, the people behind this activity coordinated with one another and used fake accounts to misrepresent themselves, and that was the basis for our action."

Facebook removed 135 accounts that originated in Iran. These pages targeted users in the U.S., North Africa and Latin America. The pages posted content focused on a variety of topics, including issues such as tensions between Israel and Palestine, U.S. race relations and Black Lives Matter.

The company said it removed 50 Instagram accounts and one Facebook account that originated in Russia. These accounts published content aimed at U.S. users.

"The people behind this operation often posted on both sides of political issues including topics like US elections, environmental issues, racial tensions, LGBTQ issues, political candidates, confederate ideas, conservatism and liberalism," Facebook said in a blog post. "They also maintained accounts presenting themselves as local in some swing states, and posed as either conservatives or progressives."

In an interview with NBC Nightly News with Lester Holt, Facebook CEO Mark Zuckerberg said that China has also been found to have attempted to interfere in a number of elections.

"We do see today Russia and Iran and China increasingly with more sophisticated tactics are trying to interfere in elections," Zuckerberg said in the interview. "But part of why I'm confident going into 2020 is that we've played a role in defending against interference in every major election around the world since 2016, in France, in Germany, in the E.U. overall, in India, in Mexico, in Brazil."

In addition to the network removals, Facebook on Monday announced a number of changes it is making to prepare for the 2020 U.S. presidential election.

Facebook is going to more prominently label posts that include false information. These labels will include a gray blurred screen that says "false information" that will hide false and partly false photos and videos.