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PHOTOS: See inside plane that crashed on Long Island as search continues for passenger

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PORT JEFFERSON, N.Y. — Authorities say three of the four people aboard a small plane that crashed in the waters in the Long Island Sound have been treated at a hospital and released.

Police are still searching Monday for a 23-year-old passenger from Queens.

Officials say student pilot, 25-year-old Austricio Ramirez, of the Bronx, was flying the Piper PA-28 Saturday when he ran into difficulties. Controls were turned over to 36-year-old instructor pilot Nelson Gomez, of Queens.

The plane crashed about 11 p.m. Saturday, landing in Port Jefferson Harbor, along the New York shoreline. Authorities say all four men exited the plane into the water.

Ramirez, Gomez and 25-year-old Wady Perez, of Queens, were rescued by Suffolk County police.

Gerson Salmon-Negron, 23, of Queens, remained missing Monday.