Las Vegas Boulevard (File Photo)

One person has died and 36 are injured, seven critically, after a car mounted the sidewalk and ran into a group of pedestrians on the Las Vegas strip on Sunday evening.

Las Vegas police said they were responding to a “major accident” near the Paris hotel and casino, with roads closed as emergency vehicles attended the scene on South Las Vegas Boulevard.

The car ran into a throng of pedestrians outside the Paris hotel and Planet Hollywood resort and casino at around 6pm on Sunday. The alleged driver is in custody, police said.

Police lieutenant Peter Boffelli said the vehicle was in the northbound lanes of Las Vegas Boulevard near Bellagio Way when it drove up onto the sidewalk in front of the Paris hotel and struck pedestrians.

Of the 37 pedestrians who were taken to the hospital, one has died, six were in critical condition, four were treated and released, and 26 are still receiving hospital care.

“This is a huge tragedy that has happened on our Strip,” Boffelli said.

Clark county fire chief Greg Cassell said the call for help came in at 6.38pm and 70 emergency crew workers were sent to the scene.

The counter-terrorism unit was also at the scene but a motive has not been determined, Boffelli said: “[It’s] unknown if it’s an intentional act or impairment act,” he said.

Las Vegas police officer Jesse Roybal said the incident did not appear to be a terrorist act.

The driver left the scene, but she has since been taken into custody and is being interviewed and tested for alcohol and controlled substances. Officials confirmed there was a second person in the car but could not confirm reports that the passenger was a child.

The Miss Universe pageant was being held at the Planet Hollywood at the time of the crash.

The Las Vegas metropolitan police department said on Twitter that it was “investigating a multiple injury auto-pedestrian crash”.

Danita Cohen, spokeswoman for University Medical Center in Las Vegas, said it was treating 15 patients. One had died, the hospital said, while three remained critical, and 11 were in a serious condition, including an 11-year-old boy.

Sunrise hospital said it was caring for 11 patients, who were all in a stable condition.

The crash occurred in front of the Paris hotel and casino and Planet Hollywood on South Las Vegas Boulevard, north of Harmon Avenue.

Police warned Las Vegas residents to expect delays on the strip for several more hours. (The Guardian)