A federal judge ordered the U.S. Census Bureau to disclose exactly how many census enumerators it employs in order to determine if the agency has defied a decision prohibiting the government from enforcing a plan that would wind down census field operations four months early.

In a Zoom hearing Tuesday, attorneys representing civil rights groups and half a dozen jurisdictions—including several in California, New York and Texas and an Indian reservation in Arizona—allege that the agency has begun wrapping up its census gathering operations ahead of its original schedule.