Have you seen this missing autistic teenager?

SEATTLE -- Mukilteo police are searching for an autistic teenager who went missing Monday afternoon.

Police say 15-year-old Evan C. Stocker was last seen on Monday at about 4:30 p.m.

Evan, who has a high-functioning form of autism called Asperger's syndrome, enjoys the television show "Survivor Man" and his mother thinks he might be camping out.

Evan has brown hair and hazel eyes. He stands 5'8" tall and weighs 180 pounds. He was last seen wearing a blue hoodie and black jeans.

Anyone who has seen Evan or knows where he might be is asked to call 911.