Riverhead police are asking the public's help in finding a missing 5-year-old boy.
Harold Martinez-Santiago was last seen on July 12 near West Main Street in Riverhead with his father Harold Martinez.
News 12 is told police are looking for the 36-year-old who has a 2009 black Honda Civic with license plate GWL1930.
Police say the matter might involve a custody dispute over the 5-year-old.
Anyone with information is asked to call Riverhead police at 631-727-4500.