Now playing
03:17
Inside Facebook's election 'war room'
Facebook
Getty Images
Facebook
Now playing
03:14
More than 500 million Facebook users' personal data leaked online
Energy and Commerce Committee/YouTube
Now playing
02:50
US lawmakers question tech CEOs on misinformation
TOPSHOT - A demonstrator wearing a mask painted with the colours of the flag of East Turkestan and a hand bearing the colours of the Chinese flag attends a protest of supporters of the mostly Muslim Uighur minority and Turkish nationalists to denounce China's treatment of ethnic Uighur Muslims during a deadly riot in July 2009 in Urumqi, in front of the Chinese consulate in Istanbul, on July 5, 2018. - Nearly 200 people died during a series of violent riots that broke out on July 5, 2009 over several days in Urumqi, the capital city of the Xinjiang Uyghur Autonomous Region, in northwestern China, between Uyghurs and Han people. (Photo by OZAN KOSE / AFP)        (Photo credit should read OZAN KOSE/AFP/Getty Images)
OZAN KOSE/AFP/AFP/Getty Images
TOPSHOT - A demonstrator wearing a mask painted with the colours of the flag of East Turkestan and a hand bearing the colours of the Chinese flag attends a protest of supporters of the mostly Muslim Uighur minority and Turkish nationalists to denounce China's treatment of ethnic Uighur Muslims during a deadly riot in July 2009 in Urumqi, in front of the Chinese consulate in Istanbul, on July 5, 2018. - Nearly 200 people died during a series of violent riots that broke out on July 5, 2009 over several days in Urumqi, the capital city of the Xinjiang Uyghur Autonomous Region, in northwestern China, between Uyghurs and Han people. (Photo by OZAN KOSE / AFP) (Photo credit should read OZAN KOSE/AFP/Getty Images)
Now playing
01:16
Facebook: Chinese hackers targeted Uyghurs living in US
A Facebook employee walks by a sign displaying the "like" sign at Facebook's corporate headquarters campus in Menlo Park, California, on October 23, 2019. (Photo by Josh Edelson / AFP) (Photo by JOSH EDELSON/AFP via Getty Images)
Josh Edelson/AFP/Getty Images
A Facebook employee walks by a sign displaying the "like" sign at Facebook's corporate headquarters campus in Menlo Park, California, on October 23, 2019. (Photo by Josh Edelson / AFP) (Photo by JOSH EDELSON/AFP via Getty Images)
Now playing
02:36
Facebook to restore news in Australia
Chris, a Trump supporter, reacts to a fact check of a manipulated video shared by the Trump campaign.
CNN
Chris, a Trump supporter, reacts to a fact check of a manipulated video shared by the Trump campaign.
Now playing
03:58
What Trump supporters see on their Facebook feeds
CNN
Now playing
02:03
Watch this former exec compare Facebook to Big Tobacco
Screengrab Nick Clegg facebook
CNN
Screengrab Nick Clegg facebook
Now playing
07:34
Facebook exec explains the company's US election actions
Getty Images
Now playing
05:15
Misleading videos shared by Republicans get millions of views
Now playing
02:24
Under questioning, Zuckerberg admits Instagram was a 'competitor'
Now playing
03:31
Congresswoman grills Facebook CEO on copying competitors
From Facebook
Now playing
02:40
Zuckerberg blasts Trump administration for worsening pandemic
Glenn Chapman/AFP/Getty Images/CNN
Now playing
03:38
He says Facebook's Libra is the future. Lawmakers aren't so sure
YouTube/Financial Services Committee
Now playing
02:15
Zuckerberg struggles to explain whether Facebook fact checks political ads
Facebook's CEO Mark Zuckerberg delivers his speech during the VivaTech (Viva Technology) trade fair in Paris, on May 24, 2018. (Photo by GERARD JULIEN / AFP)        (Photo credit should read GERARD JULIEN/AFP/Getty Images)
GERARD JULIEN/AFP/Getty Images
Facebook's CEO Mark Zuckerberg delivers his speech during the VivaTech (Viva Technology) trade fair in Paris, on May 24, 2018. (Photo by GERARD JULIEN / AFP) (Photo credit should read GERARD JULIEN/AFP/Getty Images)
Now playing
03:21
This is how Facebook kills its competition
facebook zuckerberg origin business orig _00011530.jpg
facebook zuckerberg origin business orig _00011530.jpg
Now playing
01:47
It took Facebook 15 years to take over the world. Here's how
(CNN) —  

Facebook said Friday that it had removed 82 pages, groups, and accounts that were run from Iran but targeting people in the US and the UK.

The company said it had first discovered the pages a week ago and that it was making public its initial findings due to the upcoming US midterm elections.

“The Page administrators and account owners typically represented themselves as US citizens, or in a few cases UK citizens — and they posted about politically charged topics such as race relations, opposition to the President, and immigration,” Nathaniel Gleicher, Facebook’s head of cybersecurity policy, said in a blog post.

Gleicher said on a call with reporters Friday that the company had not yet been able to determine if the operation was tied to the Iranian government.

The accounts were followed by more than 1 million people, Facebook said.

Facebook released screenshots of some of the pages, which were named “Wake Up America,” “No racism no war,” and “Thirst for Truth.”

Among the images released by Facebook were memes posted by the pages, including one about President Trump that called him, “The worst, most hated president in American history!”

The pages hosted seven events, but Facebook would not share any additional information about those events, including whether any real American or British people had attended them.

Gleicher told reporters that the primary goal of the pages appeared to spreading messages, not organizing events.

This is Facebook’s second prominent takedown of Iranian content targeting Americans in recent months.

The company said it has shared its findings with US and UK law enforcement, the US Congress, and other technology companies.

Facebook is bracing for November’s midterm elections in the US, even building a “war room” at the company’s headquarters in California.

Despite the company’s efforts, abuse of its platform is still occurring, and there are questions about the effectiveness of those efforts.