More protests are expected at the Broadview Immigration and Customs Enforcement facility on Saturday after Friday night's standoff between demonstrators and federal agents.
Demonstrators have been protesting against the Trump administration's immigration enforcement blitz happening across Chicago.
Officers used chemical agents multiple times in an effort to disperse the crowds on Friday, and federal authorities now say one of the people arrested had a gun.
Elias Cepeda, a volunteer with Pilsen Defense and Access, is seen in this video posted to Instagram right before his arrest . The 41-year-old has joined other protesters at the facility for weeks.
His mother says her son is a legal Concealed-Carry License holder and is demanding his release while other demonstrators shared their account of his arrest.
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The Department of Homeland Security commented on Cepeda's arrest and the discovery of his firearm, writing in a post to X, in part, "This is transpiring just a few days after the horrific terrorist attack on an ICE facility in Dallas."
Demonstrators say the other man arrested on Friday is a military veteran.
Saturday's protest is not expected to start until later in the afternoon.