Investigators have nabbed the fourth suspect in the weekend kidnapping in Perinton.
Amar Saleh was arrested in New York City.
Meantime, the three people already in custody made their first court appearance in what deputies call a planned family abduction.
Gamil Ahmed and Omar Saleh of Rochester, and Dajour Paul of Brooklyn, each pleaded not guilty.
They are each charged with kidnapping.
A 54-year-old mother and her two children were taken from a CPS safe house in Perinton and brought to Rochester on Sunday.
Prosecutors allege the group intended to send the children to Yemen.