A 77-year-old woman drowned at Manhattan Beach on Monday night, police said, days after a teen drowned at nearby Coney Island Beach.

Parks Enforcement Patrol spotted Sheepshead Bay resident Liudmila Marchenko “in distress” on the shoreline at about 6:15 p.m. and told lifeguards, who pulled her from the water and started CPR, officials said. When first responders arrived on the scene, the woman was unconscious and unresponsive, per the NYPD. Marchenko was rushed to NYC Health+Hospitals/South Brooklyn Health, where she was pronounced dead.

An investigation is ongoing, and the city’s Chief Medical Examiner will determine the cause of death.

Marchenko was spotted about 15 minutes after lifeguards got off-duty at 6 p.m., though it was not immediately clear when she entered the water. Lifegua

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