The McIntosh County Sheriff’s Department in McIntosh, Oklahoma, is searching for a 4-year-old boy who disappeared Monday. Zaiven Wyatt Houke, who is autistic and nonverbal, was last seen wearing a blue and white pull-up diaper at his home in the Emerald Bay community, near Checotah. Zaiven is described as a white male who stands 3-feet-6-inches …