Ginni Thomas, wife of Justice Clarence Thomas, will testify before the Jan. 6 panel, per CNN.
Texts and emails previously showed how Thomas advocated overturning the 2020 election result.
The House committee also plans to hold a public hearing on September 28.
Virginia "Ginni" Thomas, a conservative activist and wife of Supreme Court Justice Clarence Thomas, agreed to be interviewed by the House select committee investigating the January 6, 2021, Capitol riot, according to CNN.
A date for the meeting was not specified, but CNN reported it will happen in the coming weeks. The January 6 panel also has a public hearing scheduled for September 28.
Ginni Thomas' involvement with efforts to overturn the 2020 election came into question when a series of text messages and emails to one of Trump's top aides and state officials were revealed in the media.
In March, The Washington Post reported on text messages Ginni Thomas wrote to Trump's chief of staff Mark Meadows.
After it was made clear that Joe Biden was the president-elect, on November 10, Ginni Thomas texted Meadows: "Help This Great President stand firm, Mark!!!...You are the leader, with him, who is standing for America's constitutional governance at the precipice. The majority knows Biden and the Left is attempting the greatest Heist of our History."
Ginni Thomas also sent Meadows a link to a YouTube video, claiming election fraud, titled, "TRUMP STING w CIA Director Steve Pieczenik, The Biggest Election Story in History, QFS-BLOCKCHAIN."
In a follow-up text, she wrote: "I hope this is true; never heard anything like this before, or even a hint of it. Possible???"
A few months after The Washington Post report, the publication further revealed that Ginni Thomas also emailed Arizona lawmakers days after the 2020 election, urging them to "do your constitutional duty" and appoint "a clean slate of Electors" for the state.
"Article II of the United States Constitution gives you an awesome responsibility: to choose our state's Electors," Thomas wrote in the email.
The revelation of the texts and emails also immediately brought into question possible conflicts of interest for Justice Clarence Thomas, particularly for any cases that may come up regarding the January 6 riot.
Rep. Adam Schiff said in June that the associate justice should not be involved in any cases related to the Capitol assault or efforts to overturn the 2020 vote.
"Justice Thomas, to avoid even the appearance of impropriety, should have nothing to do with any cases relating to January 6, particularly regarding our investigation," Schiff said.
An attorney for Ginni Thomas did not immediately respond to Insider's request for comment.
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