It's been cold in the city, and 89-year-old Manfred Scharfstein's family is sure he is not ready for this weather.
"He was kind of mumbling, and headed out the door on 96th Street," says Manfred's nephew, Ilan.
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Manfred had not shown signs of dementia or failing health before Thursday night, but workers where he lived say he seemed agitated that night and rode the elevators for a while. Friday morning around 1:00, he walked out into the night.
He was last seen wearing a beige trench coat, a gray Kangol hat and black shoes. He may also be wearing glasses.
The family has put up posters, and the city has issued a silver alert.
Scharfstein's family escaped Nazi Germany and fled to Israel.
Anyone with information is asked to call 911.