Outgoing Homeland Security Secretary Kirstjen NielsenKirstjen Michele NielsenLeft-leaning group to track which companies hire former top Trump aides Rosenstein: Zero tolerance immigration policy 'never should have been proposed or implemented' House Republican condemns anti-Trump celebrities during impeachment hearing MORE said Sunday she would be staying on until Wednesday, April 10, to ensure an "orderly transition."

"I have agreed to stay on as Secretary through Wednesday, April 10th to assist with an orderly transition and ensure that key [Department of Homeland Security] DHS missions are not impacted," Nielsen tweeted hours after President TrumpDonald TrumpSenators given no timeline on removal of National Guard, Capitol fence Democratic fury with GOP explodes in House Georgia secretary of state withholds support for 'reactionary' GOP voting bills MORE announced her departure from the agency.

Trump announced on Twitter earlier Sunday that Nielsen would be leaving her role at DHS, where she implemented the president’s hard-line immigration policies.


Trump tweeted that Kevin McAleenan, the commissioner of Customs and Border Protection, will lead the DHS on an acting basis.

In her resignation note earlier Sunday, Nielsen had said her departure from the agency was effective April 7.

The White House did not immediately respond to a request to explain the change in Nielsen's departure date.