This marked the fifth restraint-related death at the Brown School programs across Texas.

Last week's death of 17-year-old Charles Moody, nicknamed Chase, was the first for the therapeutic outdoor adventure program at On Track in Mason, Texas.

Dallas attorney, Charles Moody, Sr., has been asking questions and trying to find answers ever since he heard the news about his son.

"My son was an outgoing kid who loved to play sports, especially basketball. He had a cross section of friends from every type of family," Charles Moody said. "I've been told by the medical examiner of Travis County that he died of asphyxia and that he had vomit from his throat all the way to his bronchi and he had no heart problems. But that's not to be released until probably next week, formally."  

Law enforcement and staff at On Track say that information has not been made available to them.

Diane Huggins, vice president of communications at Brown Schools and wilderness expert Brian MacInnes, also part of the management team, did share information about the restraint that they say was used on Chase.

That approach is a standing position, known as the team control position.

"In this particular situation, the team that was handling the procedure did get off balance and they fell forward so they ended up on the ground. We did not use the prone restraint," Huggins said.

Yet sometimes when teenagers like Chase, over 6 feet and 180 pounds, struggle hard enough it can end on the ground.

On Track management says staff members are trained for this type of situation.

"You don't place pressure on the back. You don't place pressure on the torso and that you are monitoring how the child is doing often. You're doing it because you're having a conversation with them maybe at the top of their lungs, but you're having conversation at the same time. So that's the way the training is," MacInnes said.

The autopsy report is expected sometime next week.