Three people have been injured during a horror accident at a festival after a minivan plowed through the crowd.

A woman driving a red minivan crashed through barricades and parked cars into the KIPONA Festival in Pennsylvania about 6pm on Monday night, sparking chaos as terrified revelers ran to safety.

A six-year-old boy, a woman in a wheelchair and a male employee of the traffic engineering department in Harrisburg were injured during the incident, Harrisburg Police Commissioner Thomas Carter told ABC.

According to Mayor Wanda Williams, the little boy is in a critical condition. The two adults are reportedly in stable conditions.

The driver is in custody, the Dauphin County District Attorney’s Office said. Police have not yet released her identity or any further details about what caused the incident.