Several people summoned to an office in the South Loop neighborhood for what they thought were routine immigration check-ins were instead taken into custody Wednesday by what appeared to be U.S. Immigration and Customs Enforcement agents,

Inside Chicago’s immigration, ICE officials relied on agents dressed casually and posing as court watchers to tip off waiting agents the minute immigrants’ cases were dismissed. According to a New York Times report, citing a government memo, the government prosecutors were instructed to help ICE agents identify people likely to be deported.