PHILADELPHIA (CBS) – An international manhunt is underway for a father accused of kidnapping his young son.

Jeffrey Hanson and his nine-year-old son, Billy, left Seattle and they may be sailing to Hawaii or another Pacific island.

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The boy was visiting his father and was supposed to fly home to his mother in Pennsylvania last month, but he never got on the plane.

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The FBI has not said where in Pennsylvania Billy was headed.

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