A 2-year-old girl in a stroller and a 7-year-old boy were slapped just before 12:30 p.m. Wednesday on West 21st Street and 10th Avenue.
An adult was pushing the toddler in the stroller when the man came up and slapped the two children.
The man ran away in the direction of Hudson Yards.
He was last seen a wearing black hooded sweatshirt with the words "Champion" on it with blue, black, and red colors. He was wearing black pants and black sneakers.
The investigation is ongoing.
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