It happened around 9:15 a.m. on 67th Street in Bensonhurst, where authorities say the children, from Staten Island, are driven to a yeshiva daily.
The victims, ages 4 and 6, were hit by a blue work van outside Yeshiva Ketane of Bensonhurst that initially drove away from the scene, with the driver apparently unaware he had struck anyone, according to police.
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They were rushed to Maimonides Medical Center, where the 4-year-old, later identified as Yoshi Balaban, was pronounced dead.
The 6-year-old boy is listed in critical but stable condition.
Police say the 76-year-old driver was contacted and returned to the scene. So far, no charges have been filed.
Funeral services will be held for the deceased child at the Yeshiva of Staten Island Monday night.
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