WICHITA, Kan. (AP) — The Kansas company that operates a Twin Peaks restaurant in east Wichita has admitted it knowingly employed at least 30 immigrants who were living unlawfully in the United States.

Le Grande Tetons, LLC, pleaded guilty Thursday in federal court to engaging in a pattern and practice of hiring workers it knew were not authorized to be employed in this country.

The company was immediately sentenced to pay the $50,000 fine called for in the plea agreement.

A U.S. Department of Homeland Security inspection in September 2013 identified more than 20 such immigrants working illegally at Twin Peaks in Wichita, and the store manager promised at the time to stop hiring such workers.

The government says restaurant management again began the practice in 2014, even rehiring six of those former workers.