President Donald Trump has “relieved” acting Attorney General Sally Yates of her duties reports White House Press Secretary Sean Spicer.

Spicer made the announcement via Twitter, writing: “@POTUS has named Dana Boente, US Attorney for the Eastern District of VA as Acting Attorney General. Sally Yates has been relieved.”

According to the White House, Dana Boente, U.S. Attorney for the Eastern District of Virginia, would be acting U.S. attorney general until Sessions is approved.

In a White House statement delivered after Spicer’s tweet, Trump declared that Yates had “betrayed” the administration with her decision to not stand behind Trump’s executive order after calling it “unlawful.”

“Ms. Yates is an Obama Administration appointee who is weak on borders and very weak on illegal immigration,” the White House declared in a statement.

“At present, I am not convinced that the defense of the executive order is consistent with these responsibilities, nor am I convinced that the executive order is lawful,” Ms. Yates wrote in a letter to Justice Department lawyers on Monday.

.@POTUS has named Dana Boente, US Attorney for the Eastern District of VA as Acting Attorney General. Sally Yates has been relieved.

— Sean Spicer (@PressSec) January 31, 2017

More details to follow.