As a film crew and actors in Western garb prepared to rehearse a scene inside a wooden, chapel-like building on a desert movie ranch outside Santa Fe, assistant director Dave Halls stepped outside and grabbed a prop gun off a cart.

Axar.az reports citing foreign media that he walked back in and handed it to the film’s star, Alec Baldwin, assuring him it was safe to use because it didn’t have live ammo.

“Cold gun,” Halls yelled.

It wasn’t, according to court records made public Friday. Instead, when Baldwin pulled the trigger Thursday, he killed cinematographer Halyna Hutchins and wounded director Joel Souza, who was standing behind her.