CHICAGO (AP) — Authorities are investigating the death of a 5-year-old who was pronounced dead at a hospital after being found unresponsive in a Chicago hotel’s swimming pool.

Police and fire officials say the girl was discovered unresponsive Tuesday afternoon in the pool at the Ritz-Carlton Hotel at Water Tower Place on the city’s near North Side.

The Chicago Fire Department says she was rushed to Lurie Children’s Hospital in cardiac arrest and pronounced dead at the hospital. The girl was identified by the Cook County Medical Examiner’s office as Tabitha Shields.

The cause of her death remains under investigation and no additional details were immediately available.