UPDATE: Las Vegas police located Christopher Campbell around 11 a.m. Monday.
Las Vegas police are asking for the public's assistance in locating missing 19-year-old Christopher Campbell.
Campbell is diagnosed with Asperger's syndrome, is schizophrenic, and suffers from seizures. His family says he needs medication
Campbell was last seen on Sept. 18 around 4 p.m. in the area of Lake Mead and Hollywood Boulevards in Las Vegas.
He was wearing a gray t-shirt with an unknown logo, blue jeans, and black slipper type shoes.
Anyone with information regarding Campbell's whereabouts should contact the Las Vegas Metropolitan Police Department at 702-828-3111.