A man, unrelated to the victim and shooter, but related to some of the other kids in the home, was present at the time.
From an article and news video:
According to neighbors interviewed by Action News, there were six children and at least one adult in the apartment at the time of the shooting on Sunday.
The victim's grandmother told First Coast News that the four-year-old and a two-year-old were playing with the gun and Jackson was trying to get it away from them when he was accidentally shot in the neck.
"The children were covered in blood," the 911 caller told Action News. "I went inside the house because I heard all the kids screaming and the little boy was laying on his back, covered up."
DCF's John Harrell told HuffPost Miami that the four-year-old sustained an injury during the shooting but it was not life threatening.
Lake City Police have ruled the shooting an accident and are investigating how the four-year-old got access to gun, reports the Gainesville Sun.
Every gun in the hands of a child must first pass through the hands of an adult.