UPDATE: Deputies say they have safely located Potvin.
The Ottawa County Sheriff's Office says it's searching for a missing woman.
Sarah Jessica Potvin was last seen around 11 p.m. Sunday in the area of Homestead Drive and 88th Avenue in Zeeland Township. The 20-year-old is non-verbal autistic, and possibly unclothed.
Deputies describe her as 5-feet tall, 115 pounds, with short brown hair.
Anyone with information about her whereabouts is asked to call 9-1-1.