A federal judge late Tuesday blocked the Trump administration from making widespread immigration arrests in the nation's capital without warrants or probable cause that the person is an imminent flight risk.

U.S. District Judge Beryl Howell in Washington granted a preliminary injunction sought by civil liberties and immigrants rights groups in a lawsuit against the U.S. Department of Homeland Security.

Officers making civil immigration arrests generally have to have an administrative warrant. Under the Immigration and Nationality Act, they may make arrests without a warrant only if they have probable cause to believe the person is in the U.S. illegally and is likely to escape before a warrant can be obtained, according to Howell's ruling.

The American Civil Liberties Union and other pla

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