The case was unsealed Wednesday with MT Waterworks’ arraignment and guilty pleas in Great Falls before U.S. District Judge Brian Morris.

Boos, the company president, pleaded guilty on behalf of MT Waterworks to two counts in an indictment. The company admitted a scheme to defraud the Chippewa Cree Tribe and to false and fraudulent statements made to the United States.

MT Waterworks’ attorney, Mark Parker of Billings, called the case "painful" for the company but said it was looking forward to moving on.

"As bad as it looks, it was the best day we've had in a long time. It brought an end to the dark Belcourt cloud," Parker said.

The actions, Parker said, were done "a long time ago by someone who is an admitted fraudster. This was closure for MT Waterworks. It got rid of the last vestiges of the Tony Belcourt era."

MT Waterworks disputed some of the government's proof, Parker said. But, the company hopes the judge will "see the wisdom of the deal we made with the government," he added.

A plea agreement calls for a third count of false statements and for three crimes charged against the company in a separate indictment to be dismissed.