AITKIN, Minn. (AP) -- Police say a 15-year-old boy has died after collapsing during a varsity football game in Aitkin.

Reports say Jackson Pfister, an Esko High School player, died Friday.

Pfister was taken to Riverwood Healthcare Center with what police call a "serious medical condition." He died a short time later.

Police and the Ramsey County Medical Examiner's Office are investigating the death.