Deborah W. Koontz, 53, was one of three people killed in a violent shooting at a Columbia, Missouri residence on Santa Anna Drive on February 28, 2015. Koontz, identified as White, died in the attack that also fatally wounded her brother, Donald R. Wilson, 51, and her boyfriend, Willie J. Mays, 44; Mays survived the initial shooting but later died of his injuries on June 4, 2015.

Authorities identified the shooter as Cornelius J. Parker, 28, who had been a roommate of the victims. After opening fire, Parker fled in a white Chevrolet Malibu and led officers on a high-speed pursuit that ended when his vehicle spun out in snow. Parker exchanged gunfire with approaching officers and was shot and killed by police. The Missouri State Highway Patrol investigated the officer-involved shooting, and the Callaway County Prosecuting Attorney later concluded the officers’ actions were justified and declined to file charges. The motive for Parker’s attack was not immediately clear to investigators.

Did anyone know Deborah or the household on Santa Anna Drive and have information about what led up to that night?