OKLAHOMA CITY (AP) — A federal judge has delayed part of an Oklahoma law aimed at illegal immigration from taking effect next month.

U.S. District Judge Robin J. Cauthron's preliminary injunction on Wednesday says provisions of the law are "substantially likely" unconstitutional.

Those provisions require private companies to verify the employment eligibility of all new hires or face penalties.

The decision came on a lawsuit filed by the U.S. Chamber of Commerce, the Oklahoma Chamber and other business groups.