Victoria Mujica, age15, was last seen at 11 p.m. on Monday, Feb. 15, in Valley Stream, Nassau County Police said.
She is described as being 5-foot-5, 130 pounds, with brown eyes and long black hair.
She was last seen wearing blue jeans and carrying a light purple colored backpack. Her possible destination is Manhattan.
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Anyone with knowledge of Wrighton's whereabouts is asked to contact the Nassau County Missing Persons Squad at 516-573-7347 to call 911.
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