Cassidy Hutchinson, a top former aide to Trump White House chief of staff Mark Meadows, is sworn-in as she testifies during a hearing in June before the House select committee investigating the January 6, 2021, insurrection in in Washington, DC.
CNN  — 

An Atlanta-area prosecutor investigating Donald Trump and his allies’ efforts to overturn the 2020 election has secured cooperation from former Trump White House aide Cassidy Hutchinson, sources familiar with the matter tell CNN.

Hutchinson, whose cooperation has not previously been reported, became a prominent witness during a summer hearing for the House select committee investigating the January 6, 2021, Capitol Hill insurrection.

Cassidy Hutchinson, an aide to then White House chief of staff Mark Meadows, tetifies before a House Select Committee hearing to Investigate the January 6th Attack on the US Capitol, on Capitol Hill in Washington, DC on June 28, 2022.