LAS VEGAS (AP) — A 28-year-old woman and a civil rights organization are accusing Las Vegas of violating the constitutional rights of those held at the city jail by detaining them after their jail sentence and turning them over to federal immigration authorities.

Mexican American Legal Defense and Educational Fund officials said during a rally Friday outside Las Vegas City Hall that the practice continued after a city announcement in late October that it was giving up cooperating with Immigration and Customs Enforcement “detainers” at the jail.

The organization says it believes at least five people were wrongly detained without warrants between October and mid-December.