Gun Cleaning Accident Kills 15-year-old Girl In an apartment in Northwood, Ohio, 15-year-old Symini Moore was shot and killed by 18-year-old Jakob Heintzelman, who told officials he was cleaning his gun when it unintentionally fired. Symini succumbed to her injuries before first responders arrived. Three other people were in the apartment with Symini; Heintzelman, his …