An 18-year-old man, Jeremy Retana, was killed inside a home on South Sycamore Avenue in Wichita, Kansas on September 8, 2020. Concha and the babysitter later left the house to go to a gas station, leaving the children in Retana’s care while the loaded firearm remained unsecured in the home.

While Retana was watching the boys, the nine-year-old picked up the unattended gun and accidentally fired it, striking Retana in the head. Emergency responders arrived about 4 p.m. and Retana was pronounced dead at the scene. Police arrested Christian Enrique Concha and charged him with first-degree murder and aggravated child endangerment; authorities said the nine-year-old could not be held criminally responsible for the shooting.

Does anyone have information about the household circumstances that afternoon or saw activity on South Sycamore Avenue that day?