The arrest appears to heighten the stakes in the Trump administration's aggressive actions against judges who have challenged its immigration crackdown.

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

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 that he later deleted.