President Trump is expected to nominate a top aide to Chief of Staff John Kelly to head the Department of Homeland Security, a new report said Wednesday.

Kirstjen Nielsen could be named as early as Wednesday, Politico reported, citing numerous sources.

Nielsen was Kelly’s top aide during his stint as DHS secretary and followed him to the West Wing as his deputy chief of staff when he was appointed in July.

The White House didn’t immediately comment, and Nielsen did not respond to a request for comment from the website.

People familiar with the search cautioned that, as with everything in the Trump White House, nothing is final until it’s publicly announced.

Nielsen, 45, is a lawyer and cybersecurity expert with a background in homeland security, including gigs at the Transportation Security Administration and on the White House Homeland Security Council under President George W. Bush.

“She would be the first person to run the department who has actually worked there,” a person close to Team Trump told the website. “She has a deep familiarity.”