Hannah Gutierrez-Reed, the "Rust" armorer who was convicted of involuntary manslaughter, will be called to the stand to testify in Alec Baldwin's trial, Court TV reported.
Gutierrez-Reed is serving an 18-month sentence at a facility in New Mexico. She will reportedly be transferred from the prison to the courthouse on Friday.
Gutierrez-Reed's attorney said his client will not answer any questions and plead the Fifth.
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During the trial on Thursday, a crime scene technician took the stand. The actor's defense team questioned Marisa Poppel largely about the collection of gun and ammunition evidence from the scene of the shooting.
"I do not have any physical evidence to show where the live rounds originated from," she said at one point.
Baldwin is accused of firing a live round that fatally struck the film’s director of photography, Halyna Hutchins, and injured director/writer Joel Souza. He faces the possibility of up to 18 months in prison if convicted of involuntary manslaughter.
Baldwin's defense team contends their client was performing as an actor, and the safety rested with other professionals on the set.
The actor's fate will eventually be in the hands of a jury, which includes 11 women and five men.