Authorities say the juvenile gave Malachi the 9mm semi-automatic pistol that the teen's family says he was showing off on Instagram Live April 10 when the firearm discharged.
The juvenile, who police have not named, has been charged with "numerous offenses," according to Forest Park police Maj. Chris Matson.
As Malachi's family begins to pick up the pieces, one spot of light in these dark times has come from an unexpected source: Shaquille O'Neal.
The NBA legend was so personally moved by the sad tale that he offered to personally pay for Malachi's funeral.
"No mother should have to go through this,” O’Neal said in a statement. “I can only imagine the pain that she and all of Malachi’s family must be feeling. I just wanted to do what I could to help them at such a terrible time."
Malachi was discovered by his mother and sister in a pool of his own blood after they heard a loud boom in his bedroom.
Malachi's phone was still streaming to Instagram Live when they found him, according to reports.
Malachi was rushed to a nearby hospital, where he died. Family members are certain it wasn't a suicide.
"He did not kill himself," said his godmother, Shantirea Bankston. "He loved life; he was just playing with a gun and the gun went off."