UPDATED with more details: The Santa Fe County Sheriff’s Office has confirmed that director of photography Halyna Hutchins was the crewmember killed on the New Mexico set of Rust, where star Alec Baldwin was holding a prop gun that misfired, striking Hutchins and director Joel Souza.

PREVIOUSLY, 4:58 PM: The Santa Fe County Sheriff’s Office has confirmed that a female crewmember, 42, has died from injuries resulting from a prop gun misfire on the Bonanza Creek Ranch set of the Alec Baldwin Western, Rust.

“Detectives are investigating how [the prop firearm was used] and what type of projectile was discharged,” the Sheriff’s Office said in a statement Thursday.

A production spokesperson from Rust Movie Productions LLC told Deadline, “There was an accident today on the New Mexico set of Rust involving the misfire of a prop gun with blanks.

Bonanza Creek Ranch is known for Western-set productions.

Travis Fimmel, Brady Noon, Frances Fisher and Jensen Ackles also star in the movie, which is based on a story by Souza and Baldwin.

The plot centers on Harland Rust (Baldwin), an infamous Western outlaw who has had a bounty on his head for as long as he can remember.

#BREAKING: @santafesheriff investigating incident at #Rust movie set on Bonanza Creek Ranch near Santa Fe.

Security guard at the entrance to the set of “Rust”, a western movie in production in #SantaFe, told us the set is on lockdown right now

Waiting for more details from Santa Fe Sheriff on today’s incident near Bonanza Creek

A post shared by Alec Baldwin (@alecbaldwininsta)