John Austin ’Jac’ Clements, an 82-year-old Zionsville resident, was fatally shot the morning of September 28, 2016 while walking to his mailbox in what investigators described as a seemingly random act of violence. Early leads were sparse; witness descriptions of a suspect and getaway car were vague and the community was left unsettled.

A breakthrough came after two apparently unrelated shootings at Indianapolis Metropolitan Police Department headquarters, where the shooter left notes, demanded money and left shell casings that yielded DNA. Forensic testing matched those casings to evidence from the Zionsville scene. Investigators also used cell phone GPS data to place a suspect at Clements’ murder scene.

Police arrested 21-year-old Damoine Wilcoxson of Indianapolis on October 31, 2016; the firearm recovered was forensically linked to all four shootings. If anyone knew John Clements or has information about his final walk to the mailbox, please share what you know.