A worshipper was stabbed in the head while praying early Tuesday at a synagogue in the Brooklyn borough of New York City, police said.
The attacker was later shot by police and died on arrival at a hospital. The victim, a young man stabbed in the side of the face, was being treated, said NYPD spokesman Adam Navarro.
The attack happened at the Chabad Lubavitch World Headquarters in Brooklyn at around 1:40 am (0640 GMT).
Police who rushed to the scene told the assailant to drop the knife. Instead, he lunged at officers and was shot once in the torso, Navarro said.
The motive for the attack was not immediately clear.