Hannah Gutierrez-Reed, the armorer in the Alec Baldwin movie "Rust," has been found guilty of involuntary manslaughter in connection with the accidental shooting death of cinematographer Halyna Hutchins.

The decision on Wednesday came after less than three hours of deliberation.

Following the verdict, Ms. Gutierrez-Reed, 26, was immediately remanded into custody. The Arizona native now faces a potential sentence of up to three years in prison.

However, in a surprising split verdict, a 12-member jury in Santa Fe declined to convict her on evidence-tampering charges, leaving some aspects of the case unresolved.

Ms. Gutierrez-Reed was charged with evidence tampering in 2023, after investigators accused her of passing off a bag of cocaine on the day of the shooting.

The tragic incident unfolded on Oct. 21, 2021, during the filming of the movie "Rust," when actor Mr. Baldwin was handling a reproduction Colt .45 revolver during rehearsals inside a movie-set church outside Santa Fe.

First assistant director David Halls had reportedly handed the weapon to Mr. Baldwin, assuring him it did not contain live ammunition. The firearm discharged, leading to the death of cinematographer Ms. Hutchins and injuring director Joel Souza.

The manslaughter charges against Mr. Baldwin for his role in the incident have already been dropped twice. However, he is expected to face trial in July after the charges were reinstated.

Lawyers for Ms. Gutierrez-Reed claimed she was being scapegoated for Mr. Baldwin's alleged failure to follow firearms safety rules, and for a chaotic, low-budget production where industry safety guidelines were ignored to save time.