Twitter informed congressional investigators Thursday that it removed roughly 200 accounts that were linked with Russian interference in the 2016 election, and said a Kremlin-backed news outlet spent hundreds of thousands of dollars on ads.

"Of the roughly 450 accounts that Facebook recently shared as a part of their review, we concluded that 22 had corresponding accounts on Twitter. All of those identified accounts had already been or immediately were suspended from Twitter for breaking our rules," Twitter announced in Thursday afternoon blog post.

"In addition, from those accounts we found an additional 179 related or linked accounts, and took action on the ones we found in violation of our rules."

Twitter revealed Russia Today spent $274,100 in U.S. ads in 2016 promoting "1,823 Tweets that definitely or potentially targeted the U.S. market."

On Thursday, Colin Crowell, Twitter's vice president for public policy, met with the Senate and House intelligence committees amid their separate investigations into Russia's efforts to meddle in the 2016 presidential election, especially on social media.

Twitter, like Facebook, has been called to meet with the congressional panels to brief investigators on what Russian activity on their respective platforms looked like.

Rep. Adam Schiff, D-Calif., the ranking member of the House Intelligence Committee, said in a statement the meeting with Twitter was an "important one" and said company officials "expressed their desire to work cooperatively with the committee's investigation."

"Much of the information that Twitter used to identify Russian-linked accounts, however, was derived from Facebook's own analysis, and it is clear that Twitter has significant forensic work to do to understand the depth and breadth of Russian activity during the campaign," Schiff said, adding the committee plans to continue to work with and hear from Twitter as the investigation progresses.

Schiff's Senate counterpart, Sen. Mark Warner, D-Va., was not as pleased with Twitter's performance on Thursday.

"The presentation that the Twitter team made to the Senate Intel staff today was deeply disappointing," Warner said. "The notion that their work was basically derivative based upon accounts that Facebook had identified showed an enormous lack of understanding from the Twitter team of how serious this issue is, the threat it poses to democratic institutions, and again begs many more questions than they offered. Their response was frankly inadequate on almost every level."

The questions left unanswered, Warner said, is why next month's planned open hearing is so important.

According to The Hill, Facebook, Twitter, and Alphabet — Google's parent company — have been invited to publicly testify before the Senate Intelligence Committee on Nov. 1, but have not yet confirmed who each will send to represent.

Facebook disclosed recently that it sold roughly $100,000 in ads to a Russian troll farm with Kremlin ties during the 2016 presidential campaign.

Congressional investigators have grown increasingly concerned that Russia was able to use social media networks to influence last year's election after the U.S. intelligence community concluded that the country interfered.