FRASER, Mich. (AP) — Authorities were awaiting results of an autopsy to help determine why a 13-year-old girl died after collapsing during a gym class at a Detroit area school.

Sharon Arwood was running in Fraser's Richards Middle School, north of Detroit, when she fell to the floor Thursday afternoon.

WDIV-TV in Detroit reports that two teachers gave the girl aid and paramedics arrived within a few minutes. Fraser police say she was later pronounced dead at a Mount Clemens hospital.

A school district official said the school had not been told the girl had any prior health concerns.

Robert and Barb Arwood told WXYZ-TV their daughter was healthy and received a physical each year.