East Feliciana Parish sheriff's deputies said the juvenile was playing the video game "Grand Theft Auto IV" -- a realistic game that's been associated with encouraging violence and awards points to players for killing people -- just minutes before the fatal shooting.
Authorities are calling the shooting a homicide.
Sgt. Kevin Garig told The Advocate that the identities of both the shooter and the victim are being withheld.
Garig said the woman died after suffering at least one gunshot wound to the head. She was pronounced dead at the scene.
Louisiana law prohibits authorities from charging the child with a crime because of his age.
Take ABC13 with you!
Download our free apps for iPhone, iPad, and Android devices