Former national security adviser John Bolton John BoltonJudge appears skeptical of Bolton's defense of publishing book without White House approval Maximum pressure is keeping US troops in Iraq and Syria Woodward book trails Bolton, Mary Trump in first-week sales MORE on Tuesday reportedly texted multiple media members, including "Fox & Friends" host Brian Kilmeade, to emphasize that he had "resigned" after President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE tweeted about his ouster.

Appearing on Fox News's "Outnumbered," Kilmeade said just moments after Trump made the announcement about Bolton's exit that the outgoing senior administration official had messaged him about the development.

"John Bolton just texted me just now. He’s watching. And he said, 'Let’s be clear, I resigned,'" Kilmeade said, adding that Bolton had agreed to let the Fox anchor disclose his comments on-air. "So John Bolton has just told me, texted me to say, 'I resigned.'"

John Bolton is texting Fox News hosts on live TV telling them he resigned.



Brian Kilmeade: "John Bolton just texted me, just now, he's watching. He said, 'let's be clear, I resigned.'" pic.twitter.com/YvrWO0kk7f — Alex Salvi (@alexsalvinews) September 10, 2019

The Washington Post's Robert Costa tweeted shortly after Trump's announcement that Bolton had also texted him with a similar message:

Ambassador Bolton sends me a text message just now: “Let’s be clear, I resigned, having offered to do so last night.” — Robert Costa (@costareports) September 10, 2019

Trump abruptly announced on Tuesday that he had informed Bolton that his services were "no longer needed at the White House."

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The president added in a series of tweets that he and other members of his administration "disagreed strongly" with Bolton's views, though he didn't offer any specifics.

"I asked John for his resignation, which was given to me this morning. I thank John very much for his service. I will be naming a new National Security Advisor next week," Trump tweeted.

Bolton's exit represented the end of an 18-month tenure inside the Trump administration and gave way to questions about the status of the president's national security apparatus.

Deputy national security adviser Charles Kupperman is set to fill Bolton's position on an interim basis.

Bolton, a former Fox News contributor known for his hawkish foreign policy views, appeared to push back against the president's version of events, writing in a tweet that he offered to resign Monday night.

"I offered to resign last night and President Trump said 'Let's talk about it tomorrow," he tweeted.

Multiple news outlets including The Hill later obtained a copy of Bolton's resignation letter, dated Sept. 10, that briefly announced his resignation.

"I hereby resign, effective immediately, as Assistant to the President for National Security Affairs," he wrote. "Thank you for having afforded me this opportunity to serve our country."

The White House has yet to elaborate on what transpired before Bolton's exit, though Bolton reportedly disagreed vehemently with the decision to invite Taliban leaders to Camp David for talks about peace efforts in Afghanistan, a meeting that was later scrapped.

Deputy press secretary Hogan Gidley said on Fox News that the president asked for Bolton's resignation.

"The fact is the president makes these decisions. We all serve at his pleasure, and we’re moving forward," he said.