GRAND CANYON NATIONAL PARK — Authorities at Grand Canyon National Park are searching for a Wyoming man who's reported missing after a hike.

Park officials said 22-year-old Morgan Heimer was working as a tour guide on a commercial trip on the Colorado River.

He was reported missing about 8 p.m. Tuesday near Pumpkin Springs by a member of the river trip that was on its sixth day of an eight-day trip.

Park officials said Heimer, of Cody, was last seen wearing a personal flotation device and also had a water bottle with him.