(Radio Iowa) — A judge is throwing out much of the evidence against the driver of an SUV who’s accused of killing four southwest Iowa motorcyclists in Nebraska, last year. 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 James and Sheila Matheny of Bedford, Iowa, and Michael and Jerolyn Weese of Council Bluffs. The judge ruled this week much of the state’s evidence against Cisneros-Hernades is inadmissable. 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.