A self-described whistleblower on data firm Cambridge Analytica's data harvesting practices is slated to give an interview to Democrats on the House Intelligence Committee.

Rep. Adam Schiff Adam Bennett SchiffTop Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies MORE (Calif.), the top Democrat on the panel, tweeted that he was "glad" to hear that former Cambridge Analytica employee Christopher Wylie was willing to speak to the lawmakers.

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Schiff has pressed the data firm over allegations that it obtained private Facebook information from more than 50 million people without their consent. Cambridge Analytica was suspended by Facebook on Friday, and the social media company is investigating whether the data still exists or has been destroyed.

A lawyer for Wylie confirmed to The Washington Post on Tuesday that Wylie would accept an interview to meet with Democrats on the committee.

"Glad to see Cambridge Analytica whistleblower is willing to testify," Schiff tweeted.

Schiff and other Democrats say they want to know where Cambridge Analytica's data was held and whether anyone else, including Russian intelligence operatives, could have gained access.

The Trump campaign has used the firm during the 2016 election.

“Indeed, it may be that through Cambridge Analytica, the Trump campaign made use of illegitimately-acquired data on millions of Americans to help sway the election,” Schiff said in a statement to the Post.

Cambridge Analytica reportedly received the data through Cambridge University professor Aleksandr Kogan, who obtained the data by using a Facebook app that he created, though just 270,000 people gave permission for their data to be obtained through the app, according to a New York Times report over the weekend.

Schiff sent a letter to Wylie, a self-described whistleblower, on Monday seeking documents and other information related to any illegal activity committed by Cambridge Analytica.

“The Committee’s Minority is seeking testimony from the whistleblower about the reported misappropriation of private data, as well as information to determine where the data was stored, how it was used, and whether third parties accessed and exploited the information, including in Russia,” Schiff wrote.

In his tweet Tuesday, Schiff also chastised Republicans on the panel who he said "abdicated" their responsibility to provide oversight of the Trump administration by shutting down their probe of Russia's meddling efforts in the 2016 election.

"Recent revelations about Erik Prince, Roger Stone and Cambridge Analytica illustrate how GOP decision to shut down their investigation abdicated their oversight responsibilities to country," he wrote. "But our work goes on."

Last week, Republicans on the House Intelligence Committee announced they would end their probe into Russian interference in the 2016 election, saying they found no evidence of collusion with the Russian government by Americans during the election.

Schiff blasted the conclusion as partisan and inaccurate in a tweet directed at President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE, saying that Democrats had indeed found "evidence of collusion."

"Mr. President, the Committee reached no such conclusion — only Republicans. In fact, we did find evidence of collusion, despite GOP members being more interested in protecting you than learning the truth. When accusing others of lying, best not to misrepresent facts yourself," Schiff tweeted.