Authorities in California are still searching for a Menifee autistic boy who went missing from his home last Saturday evening. Police personnel, search dogs, and helicopter support have been unsuccessful in finding the boy who was last seen by his stepbrother around 7 p.m. last Saturday night.

Eleven-year-old Terry Dewayne Smith, also known as "Juju," was reported missing when his mother Shawna Smith went to check on him last Sunday morning at his home in the 33000 block of Helen Lane in Menifee, Calif., KTLA reported.

Authorities have picked up where they started in the third day of their search, battling temperatures that are expected to soar into the 100s.

"It's going to be in the hundred-degree range today, and we need to get the boy found," Lt. Charlie Wilhite, of the Riverside County Sheriff's Department, told NBC Los Angeles.

"Those are very rugged foothills up there. There are a lot of rocks and areas not accesible by vehicle. There are a lot of areas where you might not see somebody unless you were right on top of them."

Terry was last seen wearing a pair of blue basketball shorts and is described as 4'8", 76 lbs. with blonde hair and blue eyes. At this time, foul play has not been suspected.

Anyone who does come in contact with Terry has been advised by authorities to not approach the young man and instead call 9-1-1. Volunteers in the Menifee area can contact authorities at (951)-210-1000 or Riverside County Sheriff's Department dispatch line at (951)-776-1099.

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