(NEW YORK) -- A man hiking in the Grand Canyon has died after being found unresponsive over the weekend, marking the third death in the national park within the last three weeks.
A 50-year-old unresponsive male hiker was found on the Bright Angel Trail in the Grand Canyon about 100 feet from the trail head on Sunday, according to the Grand Canyon Regional Communications Center.
Bystanders began CPR while emergency personnel responded to the scene, but efforts to resuscitate the hiker were unsuccessful.
The hiker was a San Angelo, Texas, native and had been attempting to reach the rim from an overnight stay at Havasupai Gardens. He has not been identified by authorities.
The National Park Service is conducting an investigation into the incident.
Two other hikers have died in the Grand Canyon in recent weeks.
A 41-year-old man was found unresponsive on the Bright Angel Trail on June 16 and attempts to resuscitate him were unsuccessful. The hiker was also hiking from an overnight stay.
A semi-responsive 69-year-old hiker was found on the River Trail in the Grand Canyon on July 1, and later became unresponsive. Attempts from bystanders and National Park Service personnel to resuscitate him were unsuccessful.
The hiker was identified as Scott Sims of Austin, Texas, and he had been attempting to reach Phantom Ranch.
Last week, the NPS said temperatures on exposed parts of the trail can reach over 120 degrees in the shade. The NPS does not advise hiking in the inner canyon during the heat of the day between 10 a.m. and 4 p.m.
The NPS also said efforts to assist hikers may be delayed during the summer months because of limited staff, the number of rescue calls, employee safety requirements and limited helicopter flying capability during periods of extreme heat or inclement weather.
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