Facebook, the world’s largest social network, says it will hire more than 1,000 people to help prevent deceptive advertisements from interfering with elections.
The October 2 announcement comes as Facebook is in the process of providing the U.S. Congress with copies of some 3,000 ads that it says were likely bought by people in Russia before and during the 2016 presidential election.
"Today we are delivering those ads to congressional investigators," Facebook vice president of global policy Joel Kaplan said in an online post.
Kaplan said many of them appear to promote "racial and social divisions."
He said that the ads seemed to be linked to a Russian company known as Internet Research, which violated Facebook policies because they came from fake accounts.
Facebook said on October 1 that the material would be given to the Senate and House intelligence committees and to the Senate Judiciary Committee looking into alleged Russian involvement in the U.S. election.
Facebook chief Mark Zuckerberg said last month the company would give the information to congressional investigators, although he did not specify when it would be done.
"Aggressive steps" by Facebook will include hiring more than 1,000 people to bolster its global ads review teams in the coming year, according to Kaplan.
"Enforcement is never perfect, but we will get better at finding and removing improper ads," he said.
Facebook previously provided information about Russia-linked ads to U.S. special counsel Robert Mueller, who is also investigating alleged election meddling, people familiar with the matter have told U.S. news agencies.
The social network last month said it had found thousands of ads linked to Facebook accounts that likely operated out of Russia and pushed divisive issues during the campaign.
U.S. intelligence agencies have accused Russia of meddling in the U.S. presidential election to favor Republican Donald Trump over Democratic rival Hillary Clinton.
Moscow has denied the allegations.