On January 3, 2025, 16-year-old Mattison “Matty” Johnson was fatally shot in her home on the 1400 block of East Grand Boulevard in the College Hill neighborhood of St. Louis, Missouri. The incident occurred around 1:37 p.m., and responding officers found Mattison deceased at the scene. An 18-year-old female, Mary Cornelius, who was present during the shooting and known to the victim, was interviewed by police. Cornelius admitted to holding the firearm when it discharged. She was subsequently
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