The top National Security Council official overseeing Russian and European affairs is on indefinite administrative leave.
Andrew Peek stepped into the position in November 2019, but multiple sources say a security-related investigation took him out.
Peek declined to comment on the matter, while NSC officials said they don't comment on personnel matters.
A U.S. official says the senior director's exit comes days before he was set to attend the World Economic Forum alongside President Trump in Switzerland.
This role has seen a lot of turnover. Impeachment witnesses Fiona Hill and Tim Morrison held the position, making Peek the third person to fill the position in a year.
Peek previously worked at the State Department as deputy assistant secretary of state for Iraq and Iran.
