Officials said four people were transported to the hospital after a Saturday morning accident at Fountain City Ballpark.
Bystanders told 10News a man did not know the John Deer Gator was in gear, and lost control of the utility vehicle, pinning people against the bleachers.
The driver of the vehicle, a 66-year-old male, told police that when he turned the vehicle on it immediately accelerated, striking 2 adults and 2 children that were walking on a paved pathway behind the ball field.
Dispatchers could not confirm the ages of the victims, but bystanders said two women and two children were hurt.
Authorities said none of the injuries appeared life-threatening at the scene.
10News will update the story as more details become available.