Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE will answer Senate Democrats’ questions about his meetings with Russia's U.S. Ambassador Sergey Kislyak in writing on Monday, Reuters reported.

Sessions came under fire this week after the revelation that he met twice with Kislyak during President Trump’s campaign last year, then denied doing so during his confirmation hearing in January.

He recused himself on Thursday from federal investigations into Russian election meddling and President Trump’s potential ties to Moscow.

Democrats on the Senate Judiciary Committee sent a letter to the panel’s chairman Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyTrump walks back aluminum tariffs on Canada Trump order on drug prices faces long road to finish line GOP chairman to release interim report on Biden probe 'in about a week' MORE (R-Iowa) on Friday, asking him to call Sessions before the committee to answer questions about the meeting.

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Grassley, however, said he would not hold a hearing for the attorney general.

The Justice Department said later that day that Sessions would submit written responses to the questions.

Sessions denied any wrongdoing in the meetings with Kislyak, arguing that he met with the ambassador in September in his capacity as a then-member of the Senate Armed Services Committee. The Washington Post reported that no other committee member met with Kislyak.

During a Jan. 10 confirmation hearing to become attorney general, Sessions told the Senate Judiciary Committee that he never met with Russian officials.

The revelation of the meetings was one in a series of controversies roiling the Trump administration in its early days. Former national security adviser Michael Flynn resigned last month amid allegations that he discussed U.S. sanctions with Kislyak in the month before Trump took office.

Several other current and former Trump aides have also reportedly held meetings with Kislyak.

The U.S. intelligence community has concluded that the Kremlin sought to help Trump’s presidential bid by running an extensive hacking and influence campaign during the 2016 race.

Those efforts, and Trump and his associates’ ties to Moscow, are the subject of ongoing government investigations.