A Medford man with schizophrenia is missing, Suffolk County police said Thursday.

Police said they have issued a silver alert for Joshua Allen, 20, of Wagner Road, who was last seen at about 7:30 a.m. Wednesday at a bus stop near the Westfield South Shore mall on Sunrise Highway in Bay Shore.

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Allen is about 5 feet 9 inches tall, 185 pounds, with dreadlocks, police said, and was wearing a white T-shirt, gray camouflage shorts and tan sneakers when he was at the bus stop, police said.

The silver alert program is designed to inform local media, hospitals and law enforcement agencies when a senior citizen or individual suffering from mental or cognitive disorders is missing.

Anyone with more information can call the department’s communications duty officer at 631-852-6410 or call 911.