PORTAGE, Ind. (CBS) — The body of a 9-year-old girl was recovered from the water Sunday afternoon at the Lakeshore Camp Resort in Portage, Indiana.

The Indiana Department of Natural Resources reported at 5 p.m., emergency responders were called to the resort after the girl went missing in a private lake.

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Witnesses said she was swimming from a swim platform near the shore when she began struggling. Lifeguards were on duty and started search right away, along with multiple fire department rescuers.

Around 5:30 p.m., a first responder from the Chesterton Fire Department found the girl in 15 feet of water. She was pronounced dead at Porter Regional Hospital soon afterward.

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The incident remained under investigation by Indiana Conservation Officers Sunday night.

The girl the second girl to die in the water at an Indiana beach in the past week.

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On Thursday, the body of Jerail C. Lee Jr., 12, was pulled from the water off Marquette Beach in Gary.