NEW YORK (AP) - A man has been arrested in the 1979 disappearance of a 6-year-old New York City boy. It's the first arrest ever made in a case that helped give rise to the nation's missing-children movement. New York Police Commissioner Raymond Kelly says Pedro Hernandez of Maple Shade, N.J., has been arrested in the killing of Etan Patz (AY'-tahn payts). It's not immediately clear whether Hernandez has a lawyer. Kelly says Hernandez confessed to the crime. Hernandez worked at a convenience store near Etan's Manhattan home. A law enforcement official says Hernandez told investigators this week he suffocated the boy and left his body in a box in an alley. Etan vanished on his way to school on May 25, 1979.