One person is in a critical condition and 10 others have been injured after burning fuel sprayed into the crowd at the Red CentreNATS racing event in Alice Springs.

Key points: Fuel ignited while a car was doing burnouts, spraying flames into spectators

Fuel ignited while a car was doing burnouts, spraying flames into spectators 11 people were injured, one critically

11 people were injured, one critically The event has been cancelled

Vision taken by spectators at the Alice Springs Inland Dragway shows flames soaring up from the track after fuel ignited from a car doing burnouts on Sunday afternoon.

Several people ran from the sidelines as the flames spread, and several people were badly burnt.

Eleven people were injured, with four transferred to Adelaide, including a 48-year-old man and his 19-year-old son, both from NSW — one of them in a critical condition.

A man and a woman aged in their 20s who had serious burns to their limbs were also among those sent to the Royal Adelaide Hospital.

On Monday morning five others were stable with burns to their lower limbs and being treated in the Alice Springs Hospital, while two others had been released.

The two men have burns to 20 per cent of their bodies including the face, and one of them remains in a critical condition.

Thousands of people have been in Alice Springs for the event this weekend, which brings motoring enthusiasts from across the country to Central Australia.

"Due to the incident, the organisers ceased the competition so the focus can be on the people who are in need of assistance," Northern Territory Major Events Company said.

"[We] acknowledge the respect that attendees gave to the situation and encourage any spectators affected to seek support and medical assistance."

Police are currently investigating the incident.