Newark Mayor Ras Baraka, members of the city council, and state and federal representatives held a news conference Friday morning about what the mayor is calling a “raid” by Immigration and Customs Enforcement officers at a business there on Thursday.

Newark Mayor Ras Baraka condemned a warrantless ICE immigration raid at a local business, resulting in the detainment of both undocumented residents and citizens, among them a military veteran.

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.”

Newark, N.J. Mayor Ras Baraka says there can be disagreements about immigrants, but everyone must respect and follow the U.S. Constitution.

Newark fish wholesaler Ocean Seafood Depot was raided yesterday by U.S. Immigrations and Customs Enforcement, allegedly without a warrant, according to reports. Both undocumented workers and U.S. citizens were detained,