UPDATE: Mary Walker "has returned home safely and is with her family," according to Columbus police.
Columbus police are searching for Mary Walker, who has been missing since Sept. 23.
Walker, 70, left Atlanta in the afternoon on Sept. 23 after visiting her sister, according to a missing person alert from the Columbus Police Department.
While driving back to Columbus, Walker apparently became disoriented and ended up driving to Montevello, Ala., where she stopped and asked for directions to Fort Benning, according to authorities.
"A Sheriff's Deputy in Montevello, Ala., also stopped Ms. Walker. However, Ms. Walker became frustrated with the deputy and she drove away. The deputy contacted the family but Ms. Walker had already departed," according to authorities.
Walker, who is not traveling with an active cellphone, has possible early stage dementia. She "was last seen driving back to an unknown highway headed back towards Columbus," authorities say.
She was last seen operating a dark blue 2005 BMW 325I, bearing a Georgia tag of MARYG1.
Anyone with information should call 706-653-3449 or 706-653-3400.