President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE will reportedly announce Friday that he has selected State Department spokeswoman Heather Nauert to succeed Nikki Haley Nimrata (Nikki) Haley'The soul' versus 'law and order' Author Ryan Girdusky: RNC worked best when highlighting 'regular people' as opposed to 'standard Republicans' GOP lobbyists pleasantly surprised by Republican convention MORE as the U.S. ambassador to the United Nations.

Fox News reports that Trump will make the announcement Friday morning in a tweet.

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Nauert was reported last month to have been offered the job, but no official announcement has yet been made about Haley's replacement.

Nauert's appointment to the top ambassadorship would follow Haley's surprise resignation announcement in October.

The former South Carolina governor said at the time that she had no plans to run for political office in 2020.

“It’s been eight years of intense time and I’m a big believer in term limits,” Haley said at the time. “You have to be selfless enough to know when you step aside and allow someone else to do the job.”

"I will not be running for the office in 2020. I will be campaigning for Trump," she added.

Nauert, previously a reporter and anchor at Fox News, was long rumored to be on Trump's shortlist to succeed Haley, a list which also included former deputy national security adviser Dina Powell.

Powell dropped out of consideration for the role in October. Ivanka Trump Ivana (Ivanka) Marie TrumpSpecial counsel investigating DeVos for potential Hatch Act violation: report Trump, Biden vie for Minnesota Trump luxury properties have charged US government .1M since inauguration: report MORE, the president's daughter and White House adviser, was also touted by Trump as an "incredible" choice for the position, though Trump also said that he would be criticized for nepotism if Ivanka Trump was selected.

The White House and the State Department did not immediately return requests for comment Thursday evening on reports of Nauert's appointment. If nominated by the president, she will face a confirmation by the Senate, which remains in GOP control following November's midterm elections.

--Updated at 8:20 p.m.