The Secret Service is shaking up assignments for President-elect Joe Biden’s detail because of concerns about some agents’ worrisome ties to Donald Trump, The Washington Post reported.

Biden supporters have expressed fears that some agents are too closely politically aligned with the outgoing president, sources told the Post.

Some senior officers who previously protected Biden when he was vice president will be called back to the White House to again be part of the contingent assigned to him, according to the Post.