Chaos on the Vegas Strip ... as a car plowed into a crowd of people on the sidewalk in front of the Planet Hollywood hotel Sunday night ... mowing down more than 30 people.
At least one person was killed in the incident, according to officials ... and more than 30 other people were injured.
Emergency personnel raced to the scene and transported the injured to nearby hospitals ... officials say 7 people are in critical condition. Many of the injured people are from Canada.
The driver of the car was detained and officials are trying to determine if she was under the influence at the time of the incident.