According to Anaheim fire Capt. Jamie Hirsch, the float turned instead of going straight, causing a fake piece of carpet to collide with the four people. Three of the spectators received minor injuries and were treated at the scene. A fourth guest was knocked unconscious and taken to a nearby hospital.

Though the precise cause of the accident is unknown, many suspect that the wet ground, caused by a powerful storm that struck California yesterday, may be to blame.

See ABC7 for more.