the boy was playing the video came Grand Theft Auto IV on another television set behind her just minutes before the incident
They also mention
Under state law in Louisiana, where the shooting occurred, the child cannot be charged.
Which is pretty reasonable in this case as the kid likely didn't have a clue what he was doing. They specifically said
It was determined that he did the shooting and it was an accident. He thought it was a toy gun, a play gun
Which certainly makes sense for a kid who plays GTA IV.
I'll bet $10 to anyone that nobody faces any kind of charges for this (child endangerment, anyone?). Whether the gun was grandma's or belonged to someone else hasn't been stated.