Body of a man traveling on a wooden raft with a dog across the Colorado River found in Grand Canyon National Park

The victim is believed to be Thomas Robinson, 58, of Santa Fe, New Mexico.

The body of a man who traveled down the Colorado River on a wooden raft has been found in Grand Canyon National Park, officials said.

Thomas Robinson, a 58-year-old man from Santa Fe, New Mexico, allegedly attempted to travel down the Colorado River with his dog on a wooden raft before abandoning ship at Lees Ferry, just a few miles south of the coast of Arizona. border with Utah, according to a National Park Service statement describing the incident.

National Park Service personnel were notified Friday of a body in the Colorado River near river mile 6.

“Park rangers responded and located the body which was transported to Lees Ferry and taken to the Coconino County Medical Examiner’s Office,” park officials said. “Initial information indicates that the body is that of missing person Thomas L. Robison. The Coconino County Medical Examiner will confirm the positive identification.”

The circumstances surrounding Robinson’s possible death are currently unknown and the investigation into his death is ongoing.

Park officials said no additional information on this case will be made available at this time.