Updated

MILWAUKEE — Former President Trump's final rival in the 2024 GOP presidential nomination race will speak at this week's Republican convention in what appears to be a move toward party unity in the wake of the unsuccessful assassination attempt against Trump.

Former South Carolina Gov. Nikki Haley, who served as U.N. ambassador in the Trump administration, will speak at the convention on Tuesday, a person familiar with the decision confirmed to Fox News on Sunday.

As of last week, Haley wasn't planning to attend the convention, which kicks off Monday in Milwaukee.

CLICK HERE FOR LIVE FOX NEWS UPDATES ON THE TRUMP ASSASSINATION ATTEMPT

Republican National Convention Milwaukee

Fiserv Forum is shown in Milwaukee on July 12, 2024. (Patrick T.Fallon/AFP via Getty Images)

"She was not invited, and she’s fine with that," Haley aide Chaney Denton said last week. "Trump deserves the convention he wants. She’s made it clear she’s voting for him and wishes him the best."

HALEY URGES HER DELEGATES TO VOTE FOR TRUMP AT THE GOP CONVENTION

But following Saturday's shootings at a Trump rally in western Pennsylvania, where the former president was visibly bloodied after a bullet grazed his ear and where one spectator was killed and two critically injured, the GOP has rallied around its standard-bearer.

Trump holds fist

Former President Trump is seen with blood on his face and surrounded by Secret Service agents as he is rushed from the stage after an assassination attempt at a campaign event in Butler, Pennsylvania, on July 13, 2024. (Rebecca Droke/AFP via Getty Images)

Haley launched her presidential campaign in February last year, becoming the first major candidate to challenge Trump, who had announced his candidacy three months earlier. She was the final rival to Trump, battling the former president in a contentious two-candidate showdown from the New Hampshire primary in late January through Super Tuesday in early March.

AFTER MONTHS OF SILENCE, HALEY SAYS WHO SHE'LL VOTE FOR IN THE PRESIDENTIAL ELECTION

Haley announced that she was suspending her White House campaign on March 6, the day after Trump swept 14 of 15 GOP nominating contests on Super Tuesday.

Nikki Haley announces she is suspending her campaign for president

Republican presidential candidate Nikki Haley announces the suspension of her campaign in Charleston, South Carolina, on March 6, 2024. (Reuters/Brian Snyder)

As she departed the race, Haley made it clear that she intended to keep speaking out. And Haley continued to grab up to 20% of the vote in Republican presidential primaries in the months after she dropped out.

CLICK HERE TO GET THE FOX NEWS APP

In late May, in her first public comments since announcing the end of her 2024 campaign, Haley said she would vote for Trump.

Haley won a total of 97 delegates during the Republican presidential primaries. And last week, Haley released all of her delegates and urged them to support Trump.

Fox News' Sandra Smith contributed to this report.

Get the latest updates from the 2024 campaign trail, exclusive interviews and more at our Fox News Digital election hub.