Carl Arnold was last seen on Sept. 26 around 5 p.m. at his apartment complex located at 523 Cleveland Avenue SE, the Atlanta Police Department said.
Arnold is described by police as being 5-feet-9-inches tall, weighing 165 pounds, with black hair, and brown eyes. He was last seen wearing a black and gray shirt with a dog on the front, white jogging pants, and white shoes.
Police said Arnold has been diagnosed with dementia.
Anyone who sees him should call 911 or the Atlanta Police Homicide/Adult Missing Persons Unit at 404-546-4235.