SAN FRANCISCO — Twitter says it found some 200 accounts linked to the same Russian groups that bought $100,000 worth of ads on Facebook to sow political unrest and manipulate U.S. voters during the presidential election.

The Twitter accounts, which were taken down over the last month, were linked to 470 accounts and pages that Facebook traced to the International Research Agency, a Russian troll farm.

According to a blog post released by Twitter Thursday after briefing staffers on the House and Senate Intelligence Committees, the groups on Facebook had 22 Twitter accounts. Twitter found an additional 179 accounts connected to those 22.

Twitter also shared information on Russian news outlet Russia Today, or RT, which has ties to the Kremlin, according to U.S. intelligence agencies.

Three RT accounts spent $274,100 targeting U.S. markets with ads in 2016, according to Twitter. Twitter said that most of these accounts were “directed at followers of mainstream media and primarily promoted RT Tweets regarding news stories.”

Congress and special counsel Robert Mueller are widening their probes of the role Russia played in the spread of misinformation and divisive political ads on social media and whether anyone in the U.S. aided in targeting Americans.

Facebook, Google and Twitter are under growing pressure to investigate Russian meddling on their services, with the specter of new regulations looming that could undercut their advertising businesses.

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Facebook has come under harsh scrutiny over its disclosure that Russians bought thousands of ads to spread inflammatory messages during and since the…