NEW YORK (CBSNewYork) – An 82-year-old man who suffers from dementia has gone missing in Manhattan.

Theodore Giannaris was last seen around 9:30 a.m. Sunday at Veritable Cafe near 63rd Street and 2nd Avenue.

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Authorities say he speaks Greek and may need medical attention.

Giannaris is described as 5 feet 8 inches tall, 170 pounds with salt and pepper hair and brown eyes. He was last seen wearing a gray suit jacket and gray suit pants.

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Anyone with information about his whereabouts is asked to call 911 or the NYPD’s 19th Precinct at (646)-726-2605.