A 28-year-old woman is in critical condition after she was found unresponsive in a gym pool in Thomaston on Saturday, Nassau police said.

According to Third Squad detectives, the woman was found unconscious about 8:05 p.m. in the swimming pool at Equinox gym located at 90 E. Shore Rd., by an employee.

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It was not clear how long she had been in the pool before she was discovered.

A Nassau police ambulance took the victim to a hospital, where she is listed in critical condition.