CHEYENNE, Wyo. (AP) — The state of Wyoming is asking a federal judge not to dismiss a lawsuit challenging last year's decision to turn over management of wolves to the state.

 Environmental groups last week filed papers to dismiss their lawsuit pending in federal court in Cheyenne. The groups originally filed the lawsuit in Colorado. Dismissing the suit would leave a similar challenge filed by a different coalition of groups pending in federal court in Washington, D.C.

The Wyoming Attorney General's Office on Monday asked U.S. District Judge Alan B. Johnson of Cheyenne not to allow the environmental groups to drop their suit in his court. The state accuses the groups of forum-shopping, saying they don't want to go to trial in Wyoming.