The White House has said that Rex Tillerson remains US Secretary of State despite reports of his upcoming departure, and that there are no changes at this time.
"As the President just said, 'Rex is here', said White House spokeswoman Sarah Sanders in a statement.
"There are no personnel announcements at this time. Secretary Tillerson continues to lead the State Department and the entire cabinet is focused on completing this incredibly successful first year of President Trump's administration," she added.
Earlier a senior Trump administration official said the White House has developed a plan to replace Secretary of State Rex Tillerson within weeks.
Mr Tillerson would be replaced with Mike Pompeo, the director of the Central Intelligence Agency.
Under the plan, Republican Senator Tom Cotton would be tapped to replace Mr Pompeo at the CIA, the New York Times reported, citing senior officials.
The Times, the first to report the plan, said it was not immediately clear whether President Donald Trump had given final approval to the shakeup.
Mr Tillerson's departure would end a troubled tenure for the former Exxon Mobile chief executive, who has found himself increasingly at odds with Mr Trump over policy challenges, such as North Korea and under fire for his planned cuts at the State Department.
White House Chief of Staff John Kelly developed the transition plan and has discussed it with other officials, the Times reported.
Under his plan, the staff reshuffle would happen around the end of the year or shortly afterward.
Mr Tillerson's departure has been widely rumoured for months, with attention initially focused on Nikki Haley, US ambassador to the United Nations, as his replacement.
However Mr Pompeo, a former three-term member of Congress, has increasingly moved to the forefront as he has gained Mr Trump's trust on national security matters.
Mr Trump surprised many observers when he tweeted that Mr Tillerson was "wasting his time" pursuing contacts with North Korea, and Mr Tillerson was quoted as having said that the president was a "moron", though he denied having said it.
Mr Tillerson has also defended the Iran nuclear deal, which Mr Trump last month disavowed.
