U.S. Ambassador to Greece Kimberly Guilfoyle resigned from the role on Tuesday after reports of alleged misconduct.
White House press secretary Katie Zacharia said during a press briefing Tuesday morning that the White House had asked Guilfoyle to resign.
"We have asked Ambassador Guilfoyle to resign," Zacharia said during her first briefing as White House press secretary. "She has been a wonderful asset to the team and we wish her well."
In a social media post, Guilfoyle later announced that her time in her post is "coming to an end."
"It has been the honor of my lifetime to serve the United States of America. God bless President Trump, God bless our incredible diplomats and service members, and God bless the United States of America," Guilfoyle wrote.
Later Tuesday, a White House official confirmed it "has received Ms. Guilfoyle's formal resignation."
Guilfoyle, the former wife of California Gov. Gavin Newsom and ex-fiance of Donald Trump Jr., held the ambassador position for nearly a year.
President Donald Trump tried to distance himself from Guilfoyle on Tuesday. Guilfoyle was a prominent surrogate for the Trump campaign and attended both political and family events including Tiffany Trump's wedding.
"She wasn't a member of my family. She dated my son a long time ago," he told ABC News Senior Political Correspondent Rachel Scott, later adding, "we didn't like what we were reading."
After dating for several years, Guilfoyle and Donald Trump Jr. broke off their engagement in late 2024.
Trump said he had not spoken to Guilfoyle personally.
"I didn't speak to her. No, she will not be there. I didn't like what I read," Trump said.
Her resignation comes after a report that Guilfoyle allegedly offered a Trump donor access to top administration officials in exchange for cash.
Eric Deters -- a former lawyer, conservative media personality and Trump donor -- alleged that Guilfoyle asked him to pay her $100,000 credit card bill in July 2025, days before her Senate confirmation hearing. Deters provided messages to ABC News he says he exchanged with Guilfoyle on the subject.
Wall Street Journal first reported on Deters' accusations that Guilfoyle's alleged actions were a quid pro quo.
Guilfoyle's attorney disputed the messages' authenticity to the Wall Street Journal, but did not provide specifics. ABC News reached out to Guilfoyle and her attorney on the matter, but did not receive a response.
Asked whether he was considering firing Guilfoyle on Monday, Trump said he was.
"We're looking at it. Yeah, we're not happy," Trump said.
A series of controversies have surrounded Guilfoyle's ambassadorship, including a report earlier this week in the Wall Street Journal that she boasted about private jet trips that were bankrolled by Greek businessmen.
Guilfoyle said in a post on X, "These allegations are false, and I intend to vigorously defend my name, my reputation, and my integrity. I have dedicated my professional life to fighting for justice, standing up for what is right, and defending the values that make America exceptional. I will not allow false accusations to define my decades of public service."
A spokesperson for the U.S. Embassy in Athens earlier responded to the reports, saying that Guilfoyle has "faithfully followed State Department ethics and gift reporting guidelines."
Last week, Rep. Gregory Meeks, the top Democrat on the House Foreign Affairs Committee, called for Guilfoyle to be removed from her post after reports of her misconduct.
Secretary of State Marco Rubio, visiting Greece last week, was seen with Guilfoyle by his side during official meetings. The secretary refused to comment on the swirling reports, saying he didn't know if they were true or not.
The State Department's Office of Inspector General is investigating alleged misconduct by Guilfoyle, two officials told ABC News.
While the exact next steps for the probe aren't clear, the information gathered by the State OIG could be shared with the Department of Justice. If the DOJ doesn't launch an investigation of its own, the State Department IG could still continue with its own investigation.
U.S. Attorney for the District of Columbia Jeanine Pirro said DOJ would wait for the IG's inquiry to play out.
"I think right now that there is an inspector general investigation in the Department of State," Pirro said. "We probably wait to see what, what happens with that."
ABC News' Shannon K. Kingston, Chris Boccia and Jay O'Brien contributed to this report.