Investigators said Elijah Rivas was taken by his father, 19-year-old Edgar Ramos during a supervised visit in Riverdale - about 25 miles south of Fresno.
Ramos reportedly turned himself into the Kern County sheriff's department Sunday night after dropping off his son at his parents' house in Wasco - about 30 miles from Bakersfield.
An AMBER Alert was issued Sunday afternoon.
