At least seven people were in critical condition and six others were seriously injured, the fire department said in an online statement.

The incident occurred just before 2am local time, the fire department said.

Captain Adam VanGerpen, a fire department spokesman, was quoted by ABC News as saying that a paramedic assessing one of the injured found a gunshot wound.

He said he was unable to confirm reports that it was the driver of the car that hit the crowd.

The car, he said, apparently first careened into a taco truck outside the venue and then ploughed through a valet stand and into a large group of people.

Videos posted on X showed roads being sealed off and patients being taken away in ambulances.

Authorities gave no immediate details on the cause of the incident or the identity of the driver.