Cottleville, MO (KSDK) - A 25-year-old woman was found unconscious in a backyard pool Friday night.

The woman was discoveredaround 8 p.m. in a pool behind a home in the 400 block of Waterway Drive in Cottleville.

The woman was unconscious and was transported to an area hospital where she was pronounced dead.

Scott Freitag with the Cottleville Fire Department says the St. Charles County Sheriff's Department is now investigating the incident.

The woman's name has not been released.

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