The child, Aedan Michael Mauger, was taken from a home on the 1000 block of Bedford Avenue in Shillington, Pa.
Police say the child's mother, 24-year-old Jessica Mauger, took Aedan and left the home, leaving a suicide note behind.
Police say Aedan was safely found in Lancaster. He is now in the care of his father.
Mauger was taken into police custody.