TOMBSTONE, Ariz. — Two people were hit with bullets Sunday during a gunfight re-enactment in the Old West town of Tombstone that was supposed to involve blanks.

The shooting occurred Sunday as two actors in the Tombstone Vigilante group engaged in a standoff as they re-enacted an episode from the town made famous by Wyatt Earp, Doc Holliday and the O.K. Corral.

The Tombstone Marshal’s Office said one of the actor’s guns fired live rounds, hitting a fellow member of the group. Ken Curtis fell to the ground and was flown to a hospital in Tucson, where he underwent surgery to remove the bullet. Other rounds struck businesses and a bystander whose condition was not immediately known.

The marshal says authorities inspected the weapon and found one live round in the cylinder along with five casings that indicated the six-shooter was filled with live rounds before the skit.

Tombstone authorities called it an unprecedented event in the town. The Marshal’s Office says Mayor Dusty Escapule advised the Tombstone Vigilante group to put future gunfight skits on hold as the investigation plays out.