Deputy national security adviser Nadia Schadlow has resigned, as new national security adviser John Bolton seeks to reshape his team.

Schadlow is the third high-ranking national security official to exit or be pushed out of the White House since Bolton took over on Monday.

“The administration thanks Dr. Schadlow for her service and leadership,” said White House spokesman Raj Shah. “We wish Nadia and her family the best.”

CNN and The Associated Press reported that Schadlow will remain in her post until April 27 in order to assist with the transition to her successor.​