Nine people were injured, one critically, after a car crashed into a crowd during a demolition derby in southeastern Australia, police said. The car had been taking part in a race in the town of Walcha on Saturday night when it drove through a fence and hit the grandstand, New South Wales police said in a statement. The race, part of the annual Walcha Motorcycle Rally, had been a demolition derby - a type of motorsport where drivers ram their vehicles into one another. Police said ages of the injured bystanders ranged from 20 to 75, while the critically injured person was a 54-year-old man. An investigation was underway, they said. Police said they were told that the 27-year-old driver of the car had been involved in a collision on the track right before it drove into the fence. In a statement published on the Walcha Motorcycle Rally's Facebook page, the Walcha Council said that it was 'shocked and stunned at the unfortunate accident'. The Council said it would work with authorities to 'examine the circumstances which led to the accident'. Giving any comments before concluding the inquiries would be 'inappropriate', it said. Brendan Moylan, a member of parliament for Northern Tablelands, the region where Walcha is located, thanked emergency responders and other bystanders for their 'swift and incredibly professional work at the scene'. 'My thoughts are with everyone affected,' he wrote on Facebook. Barnaby Joyce, former deputy prime minister and incumbent New England lawmaker, expressed his condolences as well, stating his 'thoughts, prayer and hopes' were with those injured in the crash. 'Such a sad end to such a great event,' he wrote. The Walcha Motorcycle Rally describes itself as a 'grassroots event for motorcycle enthusiasts'.