CHICAGO (WLS) -- A Chicago alderperson said federal immigration agents handcuffed her while she was questioning them at a Humboldt Park medical center Friday.

In multiple occasions this week in Chicago, video apparently shows federal officers deploying tear gas. It happened right outside Humboldt Park Hospital.

It's all part of a sweeping immigration enforcement effort that also saw a father and son arrested in Little Village. However, the family told ABC7 the son is a U.S. citizen.

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The activity in Humboldt Park came as Illinois Governor JB Pritzker is now calling for an investigation into how children were treated during a federal raid in South Shore .

Families say kids were zip tied, separated from parents and held for hours

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