Alec Baldwin fired a prop gun while filming a scene in New Mexico on Thursday, causing the death of cinematographer Halyna Hutchins and wounding director Joel Souza.

The incident occurred on the set of “Rust,” an independent feature that was filming at the Bonanza Creek Ranch, a popular production location south of Santa Fe…

However, the Sheriff’s office indicated that it was too soon to say what type of round was involved. The office also did not use the word “accident,” leaving that determination up to the investigators.

“The Sheriff’s office is referring to this incident as a shooting investigation,” Sheriff’s spokesman Juan Rios said. “That detail will be addressed by detectives as they work their case.”