Indiana Attorney General Greg Zoeller (WIBC.com file photo: Eric Berman)

Indiana is throwing in the towel on several provisions of the immigration law it passed last year.

Attorney General Greg Zoeller says most portions of the law calling on Indiana police to arrest or detain people they discover are in the U-S illegally run afoul of last month's U-S Supreme Court decision on Arizona's immigration law. He's filed a brief with the federal court hearing a challenge to Indiana's law conceding those points.

Zoeller will continue to argue that 48-hour federal detention orders are an exception to the Court's general principle that the state can't enforce federal law. And he says the state will continue to defend a separate lawsuit attacking other provisions of Indiana's law, requiring employers to verify workers' immigration status with a federal database, and prohibiting the use of I-D cards issued by foreign consulate in lieu of state I-D's.

The federal court had delayed a ruling to give both sides a chance to assess the impact of the Arizona decision.