Investigators are trying to determine if a seizure caused a driver to jump a curb in the Bronx, killing three people Saturday night.
Police say several more were injured after the car ran into a group of trick-or-treaters in Morris Park.
Authorities say a 52-year-old man was driving a Dodge Charger when it hit a car, went airborne and landed on a curb.
Louis Perez, 65, was pronounced dead on the scene. His 10-year-old granddaughter, Nyanna Aquil, was taken to Jacobi Medical Center along with 24-year-old Kristian Leka, where they were pronounced dead.
A 3-year-old girl, a 9-year-old girl and a 21-year-old woman were also taken to Jacobi Medical Center and treated for injuries.
The driver is in stable condition at Jacobi Medical Center.
Police are still investigating the incident. No charges have been filed.