Immigration and Customs Enforcement (ICE) agents raided a Newark, New Jersey, business venue on Thursday and detained undocumented immigrants as well as U.S. citizens without warrants, the city's mayor said.

Mayor Ras Baraka said the state's largest city will not stand idly by while people are “unlawfully terrorized,” announcing plans to hold an event to address the situation.

After a raid at a business in Newark, reportedly without a warrant, here's what to know about ICE and immigration enforcement in America.

Newark Mayor Ras J. Baraka issued a statement late Thursday afternoon denouncing the raid as an “egregious act” conducted without a warrant and in violation of the Fourth Amendment of the U.S. Constitution, which guarantees “the right of the people be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures.”

A New Jersey mayor says his city has been “unlawfully terrorized” after federal agents detained multiple people Thursday during what Immigration and Customs Enforcement called “a targeted enforcement operation.

Newark Mayor Ras Baraka confirmed in a statement that the federal Immigration and Customs Enforcement raided a business establishment in the city.

ICE said it conducted a 'targeted enforcement operation at a worksite' in Newark but did not disclose details. The owner of a restaurant said three of his workers were taken into custody.

A U.S. veteran and Navajo residents have been asked for identification. Critics are complaining of racial profiling as raids and deportations increase.

Immigration and Customs Enforcement agents appear to have stepped up their detention of unauthorized immigrants, taking more than 500 people into custody on Thursday, almost twice the average number of daily arrests late last year.

Mayor Ras J. Baraka, elected officials, and immigrant-serving organizations at a press conference discussing a warrantless U.S. Immigration and Customs Enforcement (ICE) raid that took place ...

New Jersey Democratic officials slammed a workplace raid conducted by Immigration and Customs Enforcement at a seafood market in Newark on Thursday.

The mayor of Newark, N.J. slammed the “egregious” raid by the U.S. Immigration and Customs Enforcement (ICE) agents who, he says, raided a local establishment and detained undocumented immigrants