There are growing concerns that another immigration detention center will open in New Jersey after Union County commissioners Thursday night voted to take a step toward selling the county jail that's been shuttered for the last four years.

Residents and immigrant rights groups jammed into the meeting, which broke tens at times sharing their fears that the building would be sold to a private company and turned into another 1000 bed ice detention center.

Advocates urged commissioners to pledge that wouldn't happen as the Trump administration looks to ramp up deportations and needs more places to house migrants.

County officials gave lengthy explanations for their votes, which landed at 6 to 3 and explained This step allows them to accept requests for proposals so they know how much the property is worth, with hopes they'll get bids from buyers who want to use the facility for a range of industries things like college classes or mental health offices.

Promising the RFP will include clear parameters for the old jail's use, though it's unclear exactly what those are.