Aaron Halberstam, 16, a victim of the shooting on the Brooklyn Bridge, died last night after being kept on life-support systems for two days, said a spokeswoman for St. Vincent's Hospital.
Mr. Halberstam was pronounced dead at 9:40 P.M., said Dina Gabriel, the spokeswoman.
He was one of two young men who were critically injured on Tuesday when a gunman fired on a van carrying more than a dozen Hasidic students as it began to cross the Brooklyn Bridge.
Mr. Halberstam was declared brain dead by his doctors shortly after the shooting.
Ms. Gabriel said he had not been taken off the support system at the time of his death. "My understanding is that it was the natural course of the severity of his injuries," she said.
Yehuda Krinsky, a spokesman for the Lubavitchers, said: "We all feel the deepest grief, pain and anguish." He called Mr. Halberstam "a young martyr who died because he was a Jew."
Funeral services are scheduled for 1 P.M. today at Lubavitcher World Headquarters, 770 Eastern Parkway, Crown Heights.