Most of those arrested were swiftly shuttled to a sprawling array of detention centers in 13 states, many with reports of troubling conditions.

A month after the immigration teams packed up and pulled out of Chicago for other cities, they have come back this week and resumed making arrests of allegedly undocumented immigrants.

At least 100 U.S. Homeland Security agents or officers were part of the latest wave, a federal source told the Tribune.

Federal agents carried out multiple Chicago immigration arrests, including some in Little Village, as Border Patrol Chief Greg Bovino made his return.

Tear gas appeared to be deployed during Tuesday's crackdown, which community members say netted at least 15 people across the area.

The U.S. Department of Housing and Urban Development’s Office of Inspector General is conducting an audit of the Chicago Housing Authority to scrutinize its procedures around verifying residents’ immigration status and criminal backgrounds, according to documents obtained by the Sun-Times.