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UPDATE: 1/8/14 7:39 a.m.

Ronald Zeigler returned home on his own, according to the Jacksonville Sheriff's Office. Ziegler was missing for over 16 hours.

JACKSONVILLE, Fla. - The Jacksonville Sheriff's Office has issued a Silver Alert for a 68-year-old Arlington man with Alzheimer's.

Ronald Zeigler was reported missing in November of 2013 and found by Florida Highway Patrol at a Walmart in Macclenny, Fla. Due to this past incident, JSO believe he may be at a "Walmart or strip mall among other places."

He is described as 5 foot, 9 inches tall, weighing 210 lbs. with hazel eyes and grey hair. He may be driving a white 2013 Ford Fusion with PA tag number FGD-0404. Zeigler was last seen wearing a black shirt with stripes and blue jeans.

Anybody who is aware of Mr. Zeigler's location or the location of his vehicle is asked to contact the Missing Person's Unit of the Jacksonville Sheriff's Office or other local authorities if located in another jurisdiction.