Curt L. Marzolf, 22, was killed by a single gunshot to the chest at a Rolla, Missouri residence in the early morning hours of December 12, 2015.

A native of Monroe, Wisconsin, he was a student at the Missouri University of Science and Technology and was days away from graduating with a degree in mining engineering; he had reportedly accepted a job in Overland Park, Kansas.Curt’s fiancée, Meghan Werner, 24, was found stumbling barefoot on Pine Street around 5:45 a.m. and told officers that Marzolf had committed suicide. When police entered the couple’s home they found evidence inconsistent with a self-inflicted wound: signs of a physical altercation, and an assault rifle that appeared to have been moved after the shot.

Both had attended a party earlier and had been drinking; investigators say an argument at home escalated, Werner retrieved a firearm, and a struggle over the weapon ended with the gun discharging and Marzolf’s death.