After a day of contention and little information about the nature of an immigration enforcement operation in Los Angeles, the Department of Homeland Security has finally released details about the joint operation conducted Friday morning.

Surprise U.S. Immigration and Customs Enforcement sweeps in Downtown Los Angeles prompted fierce pushback from elected officials and protesters, who decried the action as "cruel and unnecessary."

Federal agents arrested more than 40 people while conducting immigration raids and executing search warrants at multiple locations in downtown Los Angeles Friday. A total of four search warrants were served at three different locations in Los Angeles,