Police are searching for one person who remains missing after a small plane crashed in the Long Island Sound, less than a mile off the New York shoreline.

Authorities say the Piper PA-28 went down around 11 p.m. Saturday, landing in Port Jefferson Harbor, about 60 miles east of New York City.

Suffolk County police say two people were rescued after the crash and a third person also has been accounted for.

Arlene Salac, a spokeswoman for the Federal Aviation Administration, said early Sunday that four people were on board the plane heading to Long Island MacArthur Airport when the pilot reported engine trouble and made the "forced landing."

She said the FAA is investigating and the National Transportation Safety Board will determine the probable cause.