A driver struck at least four people in Queens, New York City early on Sunday, killing one and injuring three others.
The attacker fled the scene, police said, adding that the search for the suspect was under way.
Two of the injured are in critical condition, the CBS New York reported.
According to several reports, a knife fight occurred before the incident. Two people were injured as a result of it.
A New York Police Department detective said terrorism is not suspected.