UPDATE: Norseen has been located.
Pima County Sheriff's Department is searching for a missing vulnerable adult.
Tim Norseen is a 59 year-old man standing about 5'11" in height with an average build, blue eyes, and short brown hair.
He was last seen on foot wearing a dark short sleeved shirt and jeans in the 1100 block of W. Panorama Rd at around 5p.m. Saturday evening.
Anyone with information is asked to call 911.