President Donald Trump has shuffled the deck in his cabinet again -- and he did it via Twitter.

Earlier this morning, Trump announced he was ousting Rex Tillerson and replacing him with CIA head Mike Pompeo. Pompeo's slot at the CIA will be filled by Gina Haspel, currently a deputy director at the agency. Pompeo's appointment as secretary of state requires confirmation by the Senate.

Mike Pompeo, Director of the CIA, will become our new Secretary of State. He will do a fantastic job! Thank you to Rex Tillerson for his service! Gina Haspel will become the new Director of the CIA, and the first woman so chosen. Congratulations to all!

— Donald J. Trump (@realDonaldTrump) March 13, 2018

The tweet, embedded above, came at 8:44 a.m. ET, shortly before Trump departed for a visit to California.

Was the tweet the first news of the shake-up for some or all the people involved? The Washington Post reported the basics shortly beforehand, according to CBS News. 

State Department Under Secretary Steve Goldstein said, "The secretary had every intention of staying because of the critical progress made in national security. He will miss his colleagues at the the Department of State and the foreign ministers he has worked with throughout the world."

Goldstein said Tillerson wasn't aware of the reason he'd been removed and was "grateful for the opportunity to serve, and still believes strongly that public service is a noble calling."

Several hours after Goldstein's comments were made, the White House fired him for contradicting its official account of the dismissal, according to NBC News. 

Spokesmen for the White House and State Department weren't immediately available for comment. 

This is a developing story and will continue to be updated. Check out CBS News for additional live coverage.

First published March 13, 8:46 a.m. PT
Update, 9:34 a.m.: Adds news of Goldstein's dismissal.

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