UPDATE:

According Knox County dispatch, Mary Carolyn Williams has been safely located.

Knox County Sheriff's office says an officer with the University of Tennessee Police Department located Williams in a parking garage on Neyland Drive around 3:00 a.m. on Saturday.

They say Williams was involved in a minor single-vehicle wreck and used an "Emergency Blue Phone" that connects to UTPD Dispatch. The Sheriff's Office says She appeared to be in good health and uninjured, and was picked up by a family member.

PREVIOUS:

A Knoxville woman with Alzheimer's has been missing since 11 p.m. Thursday.

Mary Carolyn Williams, 75, was last seen by her family last night at her home in the West Knox County, according to the Knox County Sheriff's Office.

She was last seen wearing a blue pullover and blue pajama bottoms. She's described as a white female, 5'2", 110 pounds with brown hair and blue eyes.

Williams is believed to be driving a 2012 white Subaru Outback with a Tennessee license plate reading NPC511.

Anyone with information is asked to contact the Knox County Sheriff’s Office Major Crimes Unit at (865) 215-2243.