Alec Baldwin Shot Halyna Hutchins with a Real Bullet on the 'Rust' Set, Authorities Say

Alec Baldwin; Halyna Hutchins.Photo: Jesse Grant/Getty; Anthony Harvey/Getty Images

It has since been recovered from Souza’s shoulder.

At apress conference Wednesday, Sheriff Adan Mendoza said investigators discovered “500 rounds of ammunition” on the set, including, “a mix of blanks, dummy rounds and what we are suspecting are live rounds.”

For more on the shooting on theRustset, listen below toour daily podcast PEOPLE Every Day.

Rios confirmed to PEOPLE afterward that “live rounds” means “real bullets.”

It’s unclear where the bullets came from. Mendoza told reporters Wednesday he believed “there was some complacency on this set.”

Since the shooting, people involved in production have told TMZ that the filming of some scenes was “life-threatening,” blaming Hutchins' death on “negligence and unprofessionalism.”

Want to keep up with the latest crime coverage? Sign up forPEOPLE’s free True Crime newsletterfor breaking crime news, ongoing trial coverage and details of intriguing unsolved cases.

According to asearch warrant affidavitfrom the Santa Fe County Sheriff’s Office, assistant directorDavid Hallshanded Baldwin a gun for a rehearsal, yelling “Cold Gun!” to indicate that it was not loaded and safe to handle. Baldwin then shot the Colt .45 revolver during the scene, hitting Hutchins and Souza.

Neither Halls nor Baldwin knew that the gun had live ammunition in it, according to the affidavit.

The investigation remains ongoing, withproduction on the film halted. No charges have been filed.

source: people.com