Forest officials were informed at 2.20pm that Manoo Wongkhanmueang had fainted and arrived at the scene almost immediately with a doctor. 
Manoo had started his hike at about 10.30am. 
The doctor and officials tried to revive Manoo, and even tried to stimulate his heart with a defibrillator, but failed. 
The patient was then sent to Phu Kradueng Hospital at about 5.50pm, but was declared dead by 6.15pm when doctors could not revive him.

62-year-old’s heart fails to keep up in Phu Kradueng hike

A 62-year-old fainted while climbing the Phu Kradueng mountain in Loei province with two of his friends on Sunday and succumbed to acute heart failure in hospital later in the day.