The Columbia County sheriff said a 13-year-old girl drowned at the Cambria Public Pool on Saturday.
Life guards were on duty at the pool.
Sheriff Dennis Richards said it's possible a medical condition played a role in the drowning. He said an autopsy is planned.
Richards said first responders were called to the pool just after 2 p.m. Saturday.
Paramedics administered CPR but the girl was pronounced dead at Beaver Dam Hospital.