Six people, including the driver, were aboard the coach.

The five passengers, including the State Fair queen, were transported to Methodist Hospital with minor injuries.

The driver of the stagecoach was not injured.

Fair officials said three of the people who were taken to the hospital were released Sunday evening, and a fourth was expected to be released later Sunday. The fifth person was kept overnight for observation, officials said.

The Overland Stage Coach was performing at the Coliseum at 5 p.m. as part of a pre-event show before the eight-horse hitch competition.

“We were just expecting a stagecoach show at 5 o’clock, and the first one comes out and he turns over,” said witness Joe Bartlett. “The coliseum was about half full, and there was a collective gasp, of course.”

Witnesses said the stagecoach had taken a couple laps around the coliseum before it started losing its footing, tipping over on its side.

“It looked like to me that somebody gave way and caused those front wheels to kind of get cock eyed and that dug into the dirt as they were getting ready to go into a turn, and that stagecoach rolled right over, and of course they had the fair queen on top and the driver,” said witness Matthew Hall, who also captured video of the accident.

"And next thing you know, ambulances are being brought in and everybody was asked to go ahead and leave the building," Hall added.

The Pepsi Coliseum was evacuated Sunday evening after the incident.

"We knew the event was going to be delayed if not canceled altogether," said State Fair spokesman Andy Klotz in a press conference, when asked why the Coliseum was evacuated.

David Shaw, Indiana State Fair's chief operating officer, said he was proud of the way the fair staff responded to the accident.

“The response was, I would say, within 20 seconds I was in the hallway of the coliseum. I was one of the first to respond as well. I am proud of the response that our staff provided to the injured, to not only extract people from the stagecoach, but to attend to the folks that were injured,” Shaw said.

Hall said he thought the response was quick, too.

“It wasn’t no time," he said, "and the state police just poured into the building, took control of the scene."

The scheduled event did resume after the crash scene had been cleared.

Sunday's stagecoach crash happened the day before the one-year anniversary of the 2011 Indiana State Fair stage rigging collapse that killed seven and injured 58.

"I just couldn't believe it, especially coming up on the anniversary of what happened a year ago here," Hall said. "It's like you sit there, like you're numb, you cannot believe what just happened again."

“It is unfortunate for the State Fair," Bartlett said. "The timing is unbelievably bad. I don’t know what could have been done to avoid this.”

Investigators determined based on witness accounts and video that there was no negligence involved in the accident.