A re-enactment of the infamous 1800s-era gunfight at the OK Corral in Tombstone, Arizona, became a bit too authentic Sunday when an actor fired live rounds and struck another actor in the upper thigh.

Tom Carter, a volunteer actor with the nonprofit Western re-enactment group Tombstone Vigilantes, shot Ken Curtis during a skit of the July 1882 shoot-out between Cochise County Deputy Sheriff Kiv Phillips and Mexican outlaw Filemeno Orante on Allen Street, said Jeff Miller, chief of the Tombstone Vigilantes.

The corral is more famously known for the 1881 shootout between outlaw Cowboys Tom and Frank McLaury; Ike and Billy Clanton; and Billy Claiborne against Marshals Virgil, Wyatt, and Morgan Earp; Johnny Behan; and Doc Holliday.

Curtis was airlifted to University of Arizona Medical Center where he underwent surgery to have the bullet removed.

The group canceled all shows until the Tombstone Marshal’s Office completes its investigation.

“We don’t know where our system failed,” said Miller, who has been with the group for 20 years. “We’ll fix whatever it takes to get us back up and running again.”

Miller said actors have all of their guns inspected by an armorer — a group safety officer who checks to make sure the weapons are clean and empty of live rounds or blanks — before the actors rehearse and perform the skits scheduled for the day.

But Carter allegedly showed up late to have his weapon checked by the group’s armorer, said Marshal Bob Randall with the Tombstone Marshal’s Office.

Marshals inspected Carter’s gun and determined he fired five shots. The rounds struck local businesses and a bullet fragment lacerated a woman's neck who was standing along the street. She declined medical treatment.

The Cochise County Sheriff's Office classified the incident on Monday as aggravated assault based on the recklessness and seriousness of the injury. The office has not made any arrests.