Pakistan, Aug. 12 -- Italian orienteering athlete Mattia Debertolis tragically died on Tuesday at the World Games in Chengdu, China. He collapsed during a competition on August 8 and passed away four days later despite immediate medical care. Organizers and the International Orienteering Federation (IOF) confirmed the sad news but did not reveal the cause of death.

Debertolis, 29, was competing in the men's middle-distance orienteering event when he collapsed. The event took place about 50 kilometers from central Chengdu, in hot and humid conditions with temperatures above 30 degrees Celsius. The course included a six-kilometer run with steep climbs and 20 control points.

Orienteering requires athletes to navigate through unmarked route...