Attorney General Jeff Sessions is going to appear before a Senate intelligence committee on Tuesday, according to a letter addressed to Sen. Richard Shelby.
In the Saturday letter to Shelby (R-Ala.), the attorney general wrote that he had decided to testify following former FBI Director James Comey's testimony.
CBS first reported the news, which comes as investigations into Russia's alleged meddling in November's presidential election, and the Trump campaign's ties to the country.
Sessions was supposed to meet with the committee responsible for the budget, but has said it was clear the focus would to turn to the Russian probe, from which he had previously recused himself.
The attorney general, who had said during his confirmation hearing he hadn't met with Russians during the campaign, later admitted he had met with the Russian ambassador to the U.S. twice in the last year. He reportedly also tried offering Trump his resignation.
The Associated Press contributed to this report.