SANTA FE, N.M. (AP) — The woman who oversaw the use of weapons on the movie set where Alec Baldwin fatally shot a cinematographer has pleaded not guilty to involuntary manslaughter and tampering with evidence, New Mexico court officials said.

Movie armorer Hannah Gutierrez-Reed waived her right to an arraignment on the charges in the 2021 shooting of cinematographer Halyna Hutchins on the set of the Western movie “Rust,” officials said Wednesday.

A state district judge tentatively scheduled a trial for December.

A defense attorney for Gutierrez-Reed has characterized it a tragic accident and says the weapons specialist committed no crime. Prosecutors allege Gutierrez-Reed was negligent in the handling of firearms and ammunition on the set.

“Rust” safety coordinator and assistant director David Halls has pleaded no contest to a charge of unsafe handling of a firearm and received a suspended sentence of six months’ probation.

In April, prosecutors dropped charges against Baldwin, who was pointing a gun at Hutchins when it went off, killing her and injuring director Joel Souza.