Immigration and Customs Enforcement (ICE) officials arrested 161 people during a five-day raid this past week in Southern California.

Of those, approximately 75 percent have past criminal histories. Others were arrested since they were found to be undocumented as other arrests were taking place, said David Marin, director of Enforcement and Removal Operations for ICE in Los Angeles.

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According to ICE, these raids were "routine" and were planned before President Donald Trump took office.

Democratic state lawmakers denounced the arrests and urged immigrants to know their rights and what to do if approached by federal authorities. The arrests sparked a protest in downtown Los Angeles on Thursday evening.

ICE spokeswoman Virginia Kice said it was not immediately clear how many of those arrested had been deported.

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