A movie armourer has asked a judge to dismiss her involuntary manslaughter conviction or convene a new trial over the shooting death of a cinematographer by actor Alec Baldwin, alleging the suppression of evidence and misconduct by the prosecution.

In a court filing, defence counsel for armourer Hannah Gutierrez-Reed argued her case should be reconsidered because prosecutors failed to share evidence that might have been exculpatory.

Last week, Judge Mary Marlowe Sommer brought Baldwin’s trial to a sudden end based on the misconduct of police and prosecutors over the withholding of evidence from the defence in the 2021 shooting of cinematographer Halyna Hutchins on the set of the film Rust.

In the new court filing, defence lawyer Jason Bowles said: “This court stated on July 12 that the integrity of the judicial system demanded that the court dismiss Mr Baldwin’s case with prejudice.

“How can it be any different with Ms Gutierrez-Reed’s case, with this proven litany of serious discovery abuses?”

Kari Morrissey – lead prosecutor in both the Baldwin and Gutierrez-Reed cases – said her written response would be filed in court next week, declining further comment.

The case-ending evidence at Baldwin’s trial concerned ammunition that was brought into the sheriff’s office in March by a man who said it could be related to Ms Hutchins’ killing.

Prosecutors said they deemed the ammunition unrelated and unimportant, while Baldwin’s lawyers alleged they “buried” it, and filed a motion to dismiss the case.

Gutierrez-Reed was convicted by a jury in March in a trial overseen by Judge Marlowe Sommer, who later assigned the maximum 18-month penalty.

The armourer already has an appeal pending in a higher court on the involuntary manslaughter conviction.

Prosecutors blamed Gutierrez-Reed for unwittingly bringing live ammunition onto the set of Rust, where it was expressly prohibited, and for failing to follow basic gun safety protocols.

She was acquitted at trial of allegations she tampered with evidence in the Rust investigation.

Gutierrez-Reed also has pleaded not guilty to a separate felony charge that she allegedly carried a gun into a bar in Santa Fe, New Mexico, where firearms are prohibited.

Baldwin, the lead actor and co-producer for Rust, was pointing a gun at Hutchins during a rehearsal on a movie set outside Santa Fe in October 2021 when the revolver went off, killing Hutchins and wounding director Joel Souza.