CHEYENNE, Wyo. (AP) — Three defendants are set to stand trial in June on federal charges that they defrauded investors of more than $4 million by promoting non-existent wind farms projects in Wyoming and South Dakota.

U.S. District Judge Scott Skavdahl of Casper has set aside three weeks for a trial starting June 3. The U.S. Attorney’s Office in Cheyenne is prosecuting the case. Spokesman John Powell said the office wouldn’t discuss it before trial.