Nation 3-year-old fatally shoots his sister. Police say a man left the gun under the couch. January 2, 2019 Justin L. Mack, Indianapolis Star Comments Off on 3-year-old fatally shoots his sister. Police say a man left the gun under the couch. Police said 4-year-old Izabella-Marie A. Helem was accidentally shot by her 3-year-old brother while in the care of Darrell W. Marberry.