Police said the teens ganged up on the men aboard a S74 bus on Staten Island Wednesday night, and that 17-year-old Jacquille Pender of Staten Island was arrested a short time later.
The district attorney's office said Pender was expected to be arraigned Friday on two counts of assault and criminal possession of a weapon.
It was not immediately clear if he had a lawyer.
A witness told the Staten Island Advance that the assailants left their box cutters behind after fleeing.
Both victims were treated for cuts on their backs, arms and faces.
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