The acting fire chief said on Tuesday night that Immigration and Customs Enforcement illegally built the fence on a village road and that it could block firefighters' access to areas on that street in the event of an emergency.
The new fencing went up after days of protests over the Department of Homeland Security's immigration operation "Midway Blitz."
Some of those protests have turned violent. A handful of protesters remained outside the Broadview processing center on Tuesday morning, and some of them said the fencing went up around the facility in the middle of the night.
"It's disturbing," protester Elias Cepeda said. "It's another attempt to infringe on people's rights to express themselves publicly."
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A little further down the street, barriers were placed to block traffic. Broadview police officers also remained in the area.
This comes days after clashes between protesters and federal agents.
Agents used white smoke and pepper pellets to disperse crowds as protesters blocked the entrance of the driveway.
DHS said 16 protesters were arrested outside the Broadview processing center, including for assaulting law enforcement.
In a statement, in part, DHS Security Assistant Secretary Tricia McLaughlin said, "Today, DHS is extending fencing surrounding U.S. Immigration and Customs Enforcement's Broadview Processing Center after rioters and sanctuary politicians obstructed law enforcement, threw tear gas cans, rocks, bottles, and fireworks, slashed tires of cars, blocked the entrance of the building, and trespassed on private property."
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Demonstrators have expressed concerns over the Trump administration's immigration enforcement operations and have called on ICE to stay out of their communities.
The Trump administration says it is targeting undocumented immigrants with criminal offenses.
Due to the fencing, federal agents are now using only one side of the street to enter and exit the facility.
Some protesters worry that this will now give them a limited line of sight as to how operations are being handled.
ABC7 reached out to ICE for comment on the fire department's demands but did not immediately hear back.