Frank Williams was last seen on Monday at approximately 3:30 p.m. near Coronado Avenue and East 10th Street, according to the CHP. He is Black, 5 feet, 2 inches tall, weighs 120 pounds and has black hair and brown eyes.
Williams is believed to be wearing a short-sleeved black T-shirt and blue jeans.
The Silver Alert program was established by the California Highway Patrol to issue and coordinate alerts involving the unexplained or suspicious disappearance of elderly, developmentally disabled or cognitively impaired individuals.
The CHP said anyone who sees Williams should call 9-1-1.