NEW YORK — Three people, including a 10-year-old girl, were killed on Saturday in the New York borough of the Bronx when a car slammed into them on crowded sidewalk during Halloween trick-or-treat festivities.

New York City police said the dead included a middle-aged male, a 21-year-old male and a 10-year-old girl. The three were among many people thronging city sidewalks Saturday afternoon for annual trick-or-treat candy-collecting celebrations.

The accident occurred on Morris Park Avenue in the borough of the Bronx just before 5 p.m. Several other people, including the driver, were injured. No identities were released.

The cause of accident was under investigation, with varying reports by local media citing witnesses, officials or police sources as saying the driver appeared to have suffered a seizure, or might have been thrown into a fit of road rage by another driver just before the crash.