Mark Shellenberger was shot and killed in Neosho, Missouri, on September 4, 2016. Investigators determined his death to be a homicide after police were called for the sound of gunfire; the confrontation reportedly began inside a residence and continued into the yard, where Shellenberger was found fatally wounded.

Trenton L. Gonder, 26, of Neosho, was arrested at the scene without resistance and charged by the Newton County prosecutor with second-degree murder and armed criminal action. Bond was denied and Gonder was held in the Newton County Jail.

In March 2017 Gonder entered an Alford plea to second-degree murder and received a 20-year sentence in the Missouri Department of Corrections. Did anyone in Neosho know Mark Shellenberger or witness the events that night who can add details about what led up to the shooting?