Alec Baldwin says all movie and TV productions that use guns should have a police officer on set to 'monitor weapon safety'

• Baldwin tweeted on Monday that every film and TV set should have a police officer on set.
• The actor said a cop should be hired by the production to "specifically monitor weapons safety."

Actor Alec Baldwin - who fatally shot a cinematographer on the set of his latest movie with a gun somehow loaded with a live bullet - said Monday that all film and TV sets that use firearms should have a cop present to "monitor weapons safety."

"Every film/TV set that uses guns, fake or otherwise, should have a police officer on set, hired by the production, to specifically monitor weapons safety," Baldwin said in a tweet.

Baldwin fired a revolver on set during a scene rehearsal on October 21, killing cinematographer Halyna Hutchins and wounding director Joel Souza on the New Mexico set for the indie Western flick "Rust."

The Colt .45 revolver that Baldwin fired during a rehearsal was supposed to be loaded with dummy rounds, but investigators have said live ammunition had been loaded into the weapon.

The incident remains under police investigation and authorities have said no one has been ruled out for potential charges

"Rust" is an independently-produced Western in which Baldwin plays an outlaw who rescues his 13-year-old grandson who is sentenced to hang for manslaughter.

According to the Los Angeles Times, several members of the camera crew walked off set to protest safety conditions hours before the shooting.

According to the affidavits that were included in search warrant documents for the movie set at Santa Fe's Bonanza Creek Ranch, the gun that Baldwin used was one of three that was "set up" by the film's armorer Hannah Gutierrez-Reed and left on a cart.

The firearm was then grabbed by the movie's assistant director, Dave Halls, who took it to Baldwin for a scene inside a church building on the set, according to the police documents.

As Halls handed the gun to Baldwin, Halls yelled out "cold gun," indicating that it did not contain any live rounds before the incident, according to the documents.

The gun was then fired by Baldwin, striking Hutchins, as well as Souza, who was behind Hutchins at the time.

Halls said he did not know live rounds were in the gun when he handed it to Baldwin, the affidavit says.

Gutierrez-Reed, the head armorer, previously told a podcast she almost didn't take her previous job because she wasn't sure if she was experienced enough. "Rust" was her second movie as a head armorer.