Bettie Lee Holley, the 86-year-old Marietta woman who was reported missing earlier Wednesday, was found at a convenience store in Rockmart, authorities said.

Holley, who has Alzheimer's disease and dementia, reportedly drove off from her home in a black 2002 Honda Accord, according to police.

Holley was found unharmed at a convenience store around 9:45 p.m., police said. Authorities escorted her back to Cobb County.