Kayson McLane was last seen walking away from Hathaway-Sycamores, located in the 2900 block of El Nido Avenue, at about 5 p.m. on Sunday.
"Kayson has run away in the past and may be hanging out in the nearby Pasadena/Altadena area," the L.A. County Sheriff's Department stated in a press release.
Sheriff's officials said his caregivers were very concerned and asked for the public's assistance in locating him.
He then returned to the home around 1 p.m. Monday and was fine.