ICE agents will reportedly arrest thousands of undocumented immigrants nationwide Sunday, but there are concerns that people who are not targeted might also be swept up in the raids.

The raids are slated to affect New York City, Miami, Los Angeles, San Francisco, Chicago and other major U.S. cities.

There are reports that raids started Saturday in southwest Brooklyn.

News 12 reached out to ICE New York for confirmation on Saturday's raids. An agency spokesperson says in part, "Due to law enforcement sensitivities and the safety and security of U.S. immigration and customs enforcement personnel, the agency will not offer specific details related to enforcement operations... as always, ICE prioritizes the arrest and removal of unlawfully present aliens who pose a threat to national security, public safety and border security."

In response, the Legal Aid Society says, "We see this latest Trump attack for what it is: an attempt to resurrect his failed family separation policy from last summer and a re-election tactic to excite his base."