A 66-year-old woman who was pulled from the water by another swimmer on Round Lake near the Lakefront Park in Round Lake Beach Saturday afternoon has died | Photo: Google Street View.

A 66-year-old woman who was rescued by another swimmer on Round Lake Saturday afternoon has died in the hospital, Round Lake Beach police said.

The Round Lake Beach Police Department and Greater Round Lake Fire Protection District responded at 3:09 p.m. Saturday to Lakefront Park near Lake Shore Drive and Glenwood Drive in Round Lake Beach for a report of an unresponsive person.

Round Lake Beach Deputy Police Chief Michael Scott said that a 66-year-old woman had been pulled from the water on Round Lake by another swimmer and the on-duty lifeguard.

The lifeguard and bystanders then began CPR on the woman, who was unconscious and not breathing, before paramedics arrived and took over.

The woman was transported by ambulance to Advocate Condell Medical Center in Libertyville where she was in critical condition, Scott said. The woman died Saturday night around 9:45 p.m.

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Police originally said that the woman was from Wheeling but corrected that report and said she was from Mexico. She was visiting relatives in Wheeling and Round Lake Beach, Scott said.

The woman had been at the beach area of the park with other family members, police said. Lake County Coroner Dr. Howard Cooper said that it is unknown if the woman suffered a medical event while she was in the water or if she drowned.

Cooper said that additional testing is being done to determine the cause. The woman’s name is expected to be released Tuesday, Cooper added.

The incident remains under investigation by the Round Lake Beach Police Department and the Lake County Coroner’s Office.