Officials say a northern Texas middle school student was found unresponsive at home and pronounced dead the morning after going through football practice in triple-digit heat.

Wilbarger County Justice of the Peace Lewis Templeton said Wednesday a toxicology report should determine whether the death of 13-year-old Brent Shinn was heat-related. Foul play has been ruled out.

The 13-year-old from Vernon Middle School was found unresponsive Tuesday morning and later pronounced dead at a hospital.

Vernon schools Superintendent Tom Woody said practice lasted a little more than an hour Monday afternoon. The temperature was about 105, according to the National Weather Service.

Vernon is located about 150 miles northwest of Fort Worth.