A federal grand jury in Washington, D.C., has heard evidence concerning possible false statements former Trump White House aide Cassidy Hutchinson made to the congressional committee investigating the Jan. 6, 2021, Capitol riot, Fox News Digital has learned.

Additional evidence could be presented to the grand jury as soon as next week, according to a source familiar with the matter.

Former White House aide Cassidy Hutchinson testifies before the House select committee investigating the Jan. 6 Capitol riot on June 28, 2022, in Washington, D.C. (Brandon Bell/Getty Images)

Hutchinson, a former top aide to then-White House chief of staff Mark Meadows, emerged as one of the most prominent witnesses before the House select committee investigating the Jan. 6 Capitol riot and President Donald Trump's efforts to challenge the results of the 2020 election.

During a nationally televised hearing in June 2022, Hutchinson provided testimony about Trump's actions on Jan. 6, including an account she said she heard from another White House official about the president's reaction after being told he could not travel to the Capitol.

Her account of an alleged confrontation inside the presidential vehicle was subsequently disputed by other individuals familiar with the events.

FORMER WHITE HOUSE AIDE CASSIDY HUTCHINSON 'STANDS BY ALL OF THE TESTIMONY SHE PROVIDED' TO JAN. 6 COMMITTEE

Cassidy Hutchinson, a former aide to White House chief of staff Mark Meadows, testifies before the House Jan. 6 committee on June 28, 2022. (Brandon Bell/Getty Images)

It remains unclear which portions of Hutchinson's congressional testimony are being examined by the grand jury.

The New York Post reported Thursday that the Justice Department was investigating Hutchinson over possible false statements to Congress and that a federal grand jury had been convened to hear evidence.

Grand jury proceedings do not necessarily result in criminal charges, and the presentation of evidence does not establish that a crime occurred.

The U.S. Department of Justice building in Washington, D.C., on Aug. 17, 2026. (Anna Moneymaker/Getty Images)

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

A representative for the Justice Department and Hutchinson's attorney did not immediately respond to Fox News Digital's requests for comment.