A New Jersey man who was visiting relatives in Chicago went missing Friday in the city's South Shore neighborhood, police said.

Joseph "Joe" Key, 53, was last seen in the 7200 block of South Constance Avenue. Relatives did not know what he was wearing, but possibly a green jacket and blue jeans, police said.

He may have gone to the areas of the 1400 block of South Canal Street, the Canal Street train station, the University of Illinois Medical district or O'Hare International Airport.

Police said he may be in need of medical help.

Key is described as black with a medium complexion, black hair and brown eyes. He is 5 feet 9 inches tall, and weighs about 150 pounds, police said.

Anyone with information on his whereabouts should contact police at 312-747-8380.

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