Kimberly Guilfoyle has resigned from her post as United States Ambassador to Greece.
The White House requested her resignation after several damaging reports surfaced in recent weeks.
Among the reports was an allegation that she asked a Republican donor to pay off a personal credit card.
Guilfoyle had served as ambassador since her appointment earlier in the year.
The resignation marks a sudden end to a diplomatic tenure that drew scrutiny from the start.
Officials have not released additional details about the circumstances leading to her departure.
The White House has not named a replacement for the position.
Guilfoyle has not issued a public statement regarding her resignation.
The State Department declined to comment on the matter.
Her exit adds to a series of recent turnover among political appointees in key diplomatic roles.
