The Clay County Sheriff's Office said a 14-year-old football player from a Central Florida high school died Wednesday after working out with his team at Camp Blanding.
The student, William Shogran, was from Sebastian River High School in Indian River County.
Authorities said a coach called 911 when the boy collapsed after a morning practice at the base south of Middleburg.
"I got a football player at camp that suffered from heat issues," said the 911 caller to the dispatcher.
The boy was transported to Shands Regional Medical Center in Starke, but died around 11 a.m.
The camp was held on the base but organized and run by the school's football coaches.
The medical examiner in Alachua County is working to determine Shogran's exact cause of death.
Dr. Katerina Backus, who specializes in pediatric sports medicine at Florida Hospital for Children, said heat-related illness can quickly become fatal without immediate intervention.
She said in situations with heat-related illnesses concerning athletes, first call 911, then remove the athlete's sweaty clothes.
"They should go into a cool environment, whatever cool environment is possible. If they can be hydrated they should hydrate them, they should start packing them with ice if possible," she said.
Backus also recommends immersing the athlete in ice if available.
She said heat illness can be preventable and reminds coaches to make sure athletes are hydrated prior, during and after exercise.