Update: Ms. Ellefesen has been located and is with family, according to the Arcadia Police Department.
Original: An Arcadia senior suffering from dementia went missing Sunday and the Arcadia Police Department is seeking the public's help in locating her.
Ellefsen is 80 years old, white, 5'08", 125 lbs, wearing pink and white striped shirt and blue pants.
She was last seen Sunday at 10:15 a.m. at the Hampton Inn in Arcadia.
If you have information that can assist in helping locate Arlene Ellefsen, please call the Arcadia Police Department at (626)574-5123.