Yellowstone National Park says it is investigating a report of gunshots fired along the East Entrance Road.
According to YNP, on Saturday rangers began investigating a report that a man had fired a shotgun at some wolves that were chasing his dog east of Sedge Bay.
Law enforcement investigated the scene and found no evidence of injured wolves but they did find shotgun shells.
YNP reminded the public in its statement that it is illegal to discharge a firearm in the park, and pets must be physically controlled at all times.
Anyone with information about this incident is asked to contact the Yellowstone Tip Line at 307-344-2132.