Police are investigating after two men were sent to hospital following a crash at a mud drag-racing event in Brockville.

It happened at 7 p.m. during "Wheels A Churnin," an annual event held at Augusta Motorsport Park 

Police say the two were in an area where participants were not allowed to go.

Both men were thrown from the vehicle and police say neither of them were wearing seatbelts or helmets.

One is recovering from serious injuries and the other is in critical condition.