Deputies are seeking a 19-year-old autistic man from Altadena who vanished early Saturday morning.
Jonathan Taylor Clark left his home in the 100 block of West Alta Loma Drive about 3 a.m., Los Angeles County sheriff's officials said in a written statement.
"Jonathan has autism and (needs) prescribed medication," the statement said. "If Jonathan is without his medication, his mental capacity would be (that of a) 7-year-old."
He is described as 5 feet 11 inches tall and was last seen wearing blue jeans, along with white and yellow shoes.
Anyone with information was asked to contact the sheriff's Altadena station at 626-798-1131.