Hannah Gutierrez-Reed is the only person still facing charges for Hutchins' death after prosecutors dismissed charges against Baldwin and reached a plea agreement with first assistant director Dave Halls.

The new charge was announced as the lead investigator for the Santa Fe district attorney's office raised serious concerns about the local sheriff's investigation into the shooting and its October 2022 final report.

This comes as newly appointed special prosecutors take over the case.

Baldwin will be back on set two weeks before the start of a court hearing in New Mexico to decide whether he should stand trial for a felony charge of involuntary manslaughter over Hutchins' death in October, 2021.

Under the settlement, Rust Movie Productions' fine marked the largest workplace safety penalty in over a decade in New Mexico.

Baldwin and set armourer Hannah Gutierrez-Reed were each charged with two counts of involuntary manslaughter.

Baldwin has said he was told the gun did not contain live rounds when it was handed to him and that he did not pull the trigger.

Alec Baldwin has said he does not believe he is responsible for the death of cinematographer Halyna Hutchins.

Script supervisor Mamie Mitchell who says she was in the line of fire alleges assault, intentional infliction of emotional distress, and deliberate infliction of harm and is seeking unspecified damages in the lawsuit filed in Los Angeles Superior Court.

The negligence suit also names armourer Hannah Gutierrez-Reed, who claimed through her legal representatives that she was being 'framed' for the death of Halyna Hutchins.

David Halls' role in the accident on the New Mexico set of a 19th-century Western last month has been under scrutiny after he told police he had failed to fully check the firearm before the fatal incident.

As the film's armourer, Hannah Gutierrez-Reed was responsible for supplying and keeping weapons safe on set, ensuring that they were accounted for at all times and locked away when not in use.