Judge Hannah Dugan was arrested on suspicion that she “intentionally misdirected federal agents away from” an immigrant being pursued by the authorities, the F.B.I. director said in a social media post.

The move is an escalation of the clash between the Trump administration and local officials over deportation efforts.

FBI Director Kash Patel on Friday said federal agents arrested a Wisconsin judge on obstruction charges in a message Patel posted on X and later deleted. In the post, which Reuters saw before it was deleted,