A feud with the first lady's office is expected to cost a senior national security adviser her job after she sparred with East Wing staff and other key members of the Trump administration.

The dispute spilled into public view in extraordinary fashion on Tuesday when the first lady's office released a statement calling for deputy national security adviser Mira Ricardel's ouster as reports surfaced that President Donald Trump would fire the official.

A White House official confirmed to CNN that Trump has told people that Ricardel will be fired. But the official said she has been given some time to clear out her desk. It was not immediately clear when she would officially make her exit.

"It is the position of the Office of the First Lady that (Ricardel) no longer deserves the honor of serving in this White House," the first lady's communications director Stephanie Grisham said in a statement on Tuesday.

The statement amounted to a stunning public rebuke by a first lady of a senior official serving in her husband's administration. It came after reports surfaced earlier Tuesday indicating Ricardel would be pushed out of her post after less than seven months on the job.

Neither Ricardel nor spokespeople for the National Security Council responded to CNN requests for comment.

Reflecting the fast-moving nature of the events, soon after a Wall Street Journal report surfaced Tuesday afternoon alleging Ricardel was fired and escorted off the White House grounds, a senior White House official denied the story to reporters.

The official said Ricardel was still in her office Tuesday afternoon. The official declined to speculate further about Ricardel's future in the administration.

Her departure would leave national security adviser John Bolton without one of his key allies in the administration, a deputy who has also shared his penchant for bureaucratic infighting.

It was those sharp elbows that sources said led to the first lady's stinging statement, with Ricardel most recently feuding with members of the first lady's staff over her trip to Africa. One person familiar with the matter said Ricardel quarreled with the first lady's staff over seating on the plane and use of National Security Council resources.

A White House official accused Ricardel of being dishonest about the feud and subsequently leaking stories to try to cover her behavior.

And before her spat with the East Wing, Ricardel butted heads repeatedly with Defense Secretary Jim Mattis, a rivalry that was well-known within the Trump administration. Her disputes with Mattis preceded her time as deputy national security adviser, going back to the presidential transition when Ricardel sought to block Mattis from hiring certain people who had been critical of Trump or were viewed as insufficiently loyal to Trump. (CNN)