Two teenagers died while swimming at New York's Coney Island Beach in Brooklyn, police said.
Police received an emergency call for a water rescue in the area of Stillwell Avenue and Boardwalk West at 8:10 p.m. Friday, the New York Police Department said in a statement.
Arriving officers were informed two females, aged 17 and 18, had gone into the water and disappared from view, police said.
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Police from the department's aviation, harbor, scuba units conducted a search. Divers eventually removed both the young women from the water, police said.
The swimmers were transported to NYC Health and Hospitals/Coney Island where they were pronounced dead, according to police, who said the investigation continues.
Law enforcement sources confirmed to NBC New York that the teens were sisters. Their identities were not released.