Authorities say 23-year-old Jeser Cisneros-Hernandes of Liberal, Kansas, crossed the center line of a Keith County, Nebraska, highway in July of 2017 and hit two motorcycles head-on.
It killed 62-year-old James Matheny and 55-year-old Sheila Matheny of Bedford, Iowa, and Michael and Jerolyn Weese, both 61, of Council Bluffs.
The judge ruled this week much of the state’s evidence against Cisneros-Hernandes is inadmissible.
The Ogallala police officer reportedly never read him his rights when arresting him for vehicular homicide and reckless driving.
The officer’s body-cam footage reportedly shows Cisneros-Hernandes admitting he’d only had one hour of sleep before trying to drive from Montana back to Kansas.