LEWISTON, Idaho — A 16-year-old boy has pleaded guilty to attempted murder of his stepfather and stepsister in their home in Lewiston.
16-year-old Triston Arnzen was accused of two counts of attempted murder in a shooting that occurred in February 2022. With him was 16-year-old Chloe Marks who pleaded guilty to attempted first-degree murder in March 2023.
Both teens were 14-years-old at the time of the incident.
On Feb. 27, Lewiston police responded to a home in the 600 block of Bryden Drive after neighbors heard gunshots. Once on scene, officers found two victims suffering from gunshot wounds.
Both George Hamblin Jr. and Macayla Hamblin were transported to the hospital for their life-threatening injuries.
According to Lewiston police, they began investigating into the two juveniles. They allegedly had made plans earlier that day to shoot and kill Arnzen’s stepfather and stepsister.
Arnzen allegedly took a Ruger 9mm pistol from the top of the fridge for Marks to use. She then went into the bedroom to find the stepfather. Marks then aimed the pistol at the man and shot him in the neck.
Marks gave the gun back to Arnzen who then allegedly fired two more rounds at the man before shooting one bullet towards his stepsister.
Lewiston police had both juveniles in custody and were both charged as adults.
Marks pleaded guilty at the Nez Perce County Courthouse on March 13. She was sentenced to a minimum of four and a maximum of 11 years in prison.
During her sentencing, she apologized and took responsibility. “I regret my actions with all my heart,” Marks said. “I will do whatever it takes to make this wrong right.”
She also mentioned that she wasn’t in the right headspace and felt “pressured into doing something I wouldn’t have done if I was clearheaded.”
Arnzen pleaded guilty to two counts of attempted murder on Oct. 23 in Nez Perce County District Court. He was sentenced to a minimum of six years in prison.
Both juveniles are currently being held in Idaho’s Department of Correction and Juvenile Detention.
