Eli Estrada, 13, was shot at a home in Collinsville on Sunday when a relative's gun accidentally discharged. He was taken to the DeKalb County Regional Medical Center, where he was pronounced dead.
Collinsville 13-year-old killed in accidental shooting identified AL.com
Notice the article doesn't give details how this happened. So here's the likely scenario. The owner of the weapon let the child handle it, and imitating something he saw on tv joking put it to his head and squeezed the trigger.
Or,
The owner of the weapon was 'showing off' the weapon to the 13 year-olr, jokingly saying you better behave or else pointing the weapon at him and squeezed the trigger.
Bottom line is, this couldn't have happened without the victim or someone else pointing the weapon towards him/himself and squeezing the trigger. Guns don't discharge randomly according the Uncertainty Principle. They only go off when you squeeze the trigger while pointing them at someone.