Yellowstone National Park is asking for the public’s help in identifying who was responsible for illegally retrieving a bull elk carcass from inside the park last month. Park rangers determined the bull was shot sometime between September 11th and September 21st, inside the park’s southern boundary behind the Wyoming Game and Fish patrol cabin along Thorofare Creek. Anyone with information is requested to contact the Lake Ranger station at 307-344-2403, or call the Tip Line at 307-344-2132. In some cases a cash reward is offered for information leading to the arrest and conviction of anyone illegally using firearms in the park or illegally killing or transporting wildlife in the park. Hunters are reminded that hunting is not permitted within the park. Park officials remind that athough most of the park boundary is well marked, it is the responsibility of the hunter to ensure he or she does not hunt within the park.