According to the Arkansas State Crime Laboratory, preliminary autopsy findings indicate that Montel Williams, the 15 year-old student who collapsed and died during a Gurdon High School football practice earlier this week, died of an undiagnosed heart condition. Further testing is being conducted. The 911 call to police suggested Williams's collapse was heat-related. Williams's mother tells David Goins of Fox 16 News she still believes her son was being "pushed too hard." The team was practicing later in the evening to avoid high temperatures.