A union that covers prop masters sent an email to its members Friday morning in which it said “a single live round was accidentally fired on set by the principal actor,” according to Indie Wire.

Anthony Pawluc, secretary-treasurer of the International Alliance of Theatrical Stage Employees Local 44, wrote that the bullet struck “both the Director of Photography, Local 600 member Halnya Hutchins, and Director Joel Souza,” the site reported.

“Local 44 has confirmed that the Props, Set Decoration, Special Effects and Construction Departments were staffed by New Mexico crew members. There were no Local 44 members on the call sheet,” the email cited by Indie Wire added.