1. A 63-year-old man from San Diego died of a suspected heart attack while hiking in Zion National Park, Utah.
2. The incident took place on the strenuous West Rim Trail, where the man was found unresponsive.
3. Othe
r hikers on the trail initiated CPR before park rangers arrived at the scene.
4. Rangers continued resuscitation efforts, using a heart monitor and automated external defibrillator for electric shocks.
5. Over 20 search and rescue team members and emergency personnel responded to the medical emergency.
6. Despite an hour and a half of resuscitation attempts, the man was pronounced dead.
7. The cause of death is under investigation but is believed to be consistent with a heart attack.
8. The medical emergency occurred near Scout Lookout on the West Rim Trail, prompting a temporary closure for rescue operations.
9. Park Superintendent Jeff Bradybaugh extended condolences to the hiker's family and thanked bystanders who assisted with CPR.
10. The West Rim Trail has since reopened after the completion of rescue operations.