MENIFEE, Calif. - There's still no sign of an 11-year-old autistic boy who's been missing from his Southern California home since Saturday night.
Some 1,000 emergency workers and volunteers have been combing the sun-scorched hills of Menifee, searching for Terry Dewayne Smith Jr.
Menifee mayor Scott Mann said in a news conference Tuesday, "We pledge that we will continue this search effort until such time as circumstances dictate otherwise."
Searchers are concentrating on a 55-square mile area where temperatures have topped 100 degrees since the boy went missing.
The FBI is helping in the investigation.
Fear for the child's safety is heightened because he might not be carrying any food, water or his medication.
The 4-foot-8 boy with sandy brown hair and brown eyes was last seen wearing blue basketball shorts. And other local children are asked to not wear blue, to help avoid confusion.