Grisham confirmed the news in a post on Twitter, saying it has “been an honor to serve the country in the @WhiteHouse.”
“I am very proud to have been a part of the @Flotus @MELANIATRUMP mission to help children everywhere, & proud of the many accomplishments of this administration,” she wrote.
Before working for the first lady, Grisham served as the White House press secretary. During her tenure, she did not hold any press briefings.
She was replaced by Kayleigh McEnany in April of 2020.
Grisham’s resignation came hours after chaos erupted at the U.S. Capitol building on Wednesday, as supporters of U.S. President Donald Trump breached the building, in protest of a joint session of Congress that was seen to be a final chance to overturn the 2020 election results.
During the protests, lawmakers and members of the media were forced to shelter in place. Others were evacuated and taken to undisclosed locations while police struggled to secure the building.
Meanwhile, protesters gained access to the Senate chamber and several officers.
A total of four people died as a result of the protests, police confirmed.
Grisham is not the only one looking to exit the White House, U.S. media reports suggest.
On Thursday, Mick Mulvaney, who previously served as President Donald Trump’s chief of staff, told CNBC’s “Squawk Box” that he is resigning from his current role as special envoy to Northern Ireland following the riots at the U.S. Capitol.
“I can’t do it, I can’t stay here,” he said. “I wouldn’t be surprised to see more of my friends resign over the course of the next 24 to 48 hours, it would be completely understandable if they did.”
White House deputy national security adviser Matt Pottinger also resigned, joining a number of officials who are leaving the administration of U.S. President Donald Trump following the riot.
The White House social secretary, Rickie Niceta, also resigned, as did a deputy White House press secretary Sarah Matthews, two sources told Reuters.
Pottinger, a leading figure in the development of Trump’s China policy, resigned on Wednesday in response to Trump’s reaction to a mob of protesters who breached the U.S. Capitol, a senior administration official told Reuters. Bloomberg first reported the resignation.