President-elect Donald Trump is expected to name Sen. Marco Rubio of Florida as secretary of state for his administration in the coming days, according to three sources familiar with the selection process.

Trump could still change his mind, the sources cautioned, noting that the decision wouldnt be finalized until the president-elect makes a formal announcement.

The New York Times first reported Trumps plans to name Rubio as the nations top diplomat.

Trump had previously considered Rubio as a running mate before ultimately choosing Sen. JD Vance, R-Ohio.

Trump has made a series of other staffing announcements in recent days. On Monday he announced plans to nominate former Rep. Lee Zeldin, R-N.Y., as the Environmental Protection Agencys top administrator and Rep. Mike Waltz, R-Fla., as his national security adviser. Last week, he said Susie Wiles, his campaign manager, would be White House chief of staff. On Sunday, he named immigration hard-liner Tom Homan as his “border czar.”

This is a developing story. Please check back for updates.

This story first appeared on NBCNews.com. More from NBC News:

Senate Republican leadership fight becomes a proxy for MAGA influence under Trump
Trump has shaped the Supreme Court, but it could still hinder his agenda
Litigation is a certainty: Trumps call to end birthright citizenship would face a mountain of opposition