GRAND CANYON NATIONAL PARK, Ariz.—A body found at the Grand Canyon is believed to be a Hungarian man who was reported missing in July, authorities said. The body believed to be Gabor Berczi-Tomcsanyi, 45, was found Monday about 430 feet below the rim at Yavapai Point, Grand Canyon National Park officials said Wednesday. Berczi-Tomcsanyi was a Hungarian national who lived in Hong Kong and who was traveling in the U.S. Southwest, park spokeswoman Joelle Baird told The Associated Press. It is believed Berczi-Tomcsanyi entered the park on or around July 19, park officials said in a statement. His family reported him missing on July 29 to Las Vegas police. The car he was driving was located Aug. 19 at a park visitor center with his belongings in it, which prompted an air and ground search. The National Park Service and the Coconino County Medical Examiner were conducting an investigation, and …