An autopsy report shows a 13-year-old boy left tied to a tree for 18 hours in June died of dehydration and heat stroke.
WRAL-TV reports that Tyler McMillan's autopsy shows his body temperature was 105.6 degrees when he was taken to the hospital. Tests showed a pattern of dehydration.
Authorities say Tyler McMillan's parents found him unresponsive on June 12 after he had been tied to a tree overnight as punishment. His father, Brice McMillan, and stepmother, Sandra McMillan, have been charged with murder and felony child abuse.
The autopsy also found Tyler had insect bites on his arms and legs, bruises on his buttocks and legs that may have been caused by a rod-like instrument and marks on his wrists and ankles consistent with plastic ties.