EAST ST. LOUIS, Ill. (AP) — Authorities in East St. Louis say a 16-year-old high school football player has died after passing out while lifting weights.

The Belleville News Democrat reports that the sophomore was in East St. Louis Senior High School’s weight room when he passed out Wednesday afternoon. St. Clair County Coroner Calvin Dye says Jermaine Falconer was taken to the emergency room at Touchette Regional Hospital in Centreville, where he was pronounced dead at 5 p.m. Wednesday.

Dye says an autopsy is planned and authorities don’t yet know a cause of death.

High school spokeswoman Sydney Stigge Kaufmann says officials are investigating. Kaufmann says Falconer was participating in an athletic workout. She says a crisis team was at the school Thursday and the community is “grieving the loss.”