President Donald Trump has fired several White House National Security Council officials after he was urged by far-right activist Laura Loomer to purge staffers she deemed insufficiently loyal to his “Make America Great Again” agenda, several people familiar with the matter said Thursday.

The Trump administration has fired at least three officials at the National Security Council, with more firings expected, according to the BBC's US partner CBS News.

It is not clear why the staffers were removed from their roles, but CBS reports the decision followed a meeting between far-right activist Laura Loomer and President Donald Trump at the White House on Wednesday.

President Donald Trump reportedly fired multiple officials on his National Security Council shortly after he met with Laura Loomer in the Oval Office.

The president met with Loomer, a self-described “investigative journalist,” on Wednesday. Loomer has publicly accused Trump administration staffers of disloyalty and said there have been vetting failures at the NSC and elsewhere through various posts on X.

U.S. national security adviser Mike Waltz used the Signal messaging app to host other sensitive discussions with Cabinet members, The Wall Street Journal has reported, citing two unnamed officials.

Among those discussions were threads on brokering peace between Russia and Ukraine, and military operations, according to the Journal.

Newsweek could not independently verify the report, and contacted the White House press office by email outside of normal business hours for comment.

The Atlantic magazine’s editor in chief was included on a message chain in which top Trump administration officials — including Vice President JD Vance, Defense Secretary Pete Hegseth and national security adviser Mike Waltz — discussed recent strikes against the Houthi terror group in Yemen, in a stunning breach of national security.

Jeffrey Goldberg, editor in chief of The Atlantic, was apparently included in a Trump administration group chat on Signal in which top officials debated and then discussed details of attacks against Houthi rebels in Yemen.

The initial invite to the group apparently came from national security adviser Mike Waltz. Defense Secretary Pete Hegseth reportedly sent the group details including weapons used, targets, and timing — two hours ahead of the attacks, which began March 15.

The world found out shortly before 2 p.m. eastern time on March 15 that the United States was bombing Houthi targets across Yemen.

I, however, knew two hours before the first bombs exploded that the attack might be coming. The reason I knew this is that Pete Hegseth, the secretary of defense, had texted me the war plan at 11:44 a.m. The plan included precise information about weapons packages, targets, and timing.

This is going to require some explaining.

US President Donald Trump revoked security clearances from his previously defeated Democratic election rivals, Kamala Harris and Hillary Clinton, as well as a number of other former officials and critics.

Trump said in February he was revoking security clearance for his predecessor Joe Biden. His order confirmed that decision, adding that he was also revoking the security clearance of "any other member" of the Biden family.