CODY, Wyo. (AP) — Investigators are seeking the public's help as they try to find out who killed a grizzly near Yellowstone National Park.

The U.S. Fish and Wildlife Service and Wyoming Game and Fish Department said Wednesday a group on horseback discovered the dead bear alongside a trail last week. The bear was found about 6 miles northeast of Yellowstone's East Entrance. Game and Fish warden Travis Crane says investigators believe the bear was shot between May 1 and May 4.

Crane says anybody who saw suspicious activity in the area around that time should call the Game and Fish Department. Grizzlies are protected as a threatened species under the Endangered Species Act.